diff --git a/src/effects/AutoDuck.cpp b/src/effects/AutoDuck.cpp
index c44252f14..6d802f7b9 100644
--- a/src/effects/AutoDuck.cpp
+++ b/src/effects/AutoDuck.cpp
@@ -230,12 +230,12 @@ bool EffectAutoDuck::Init()
          }
          else
          {
-            wxMessageBox(
+            Effect::MessageBox(
                _("You selected a track which does not contain audio. AutoDuck can only process audio tracks."),
                /* i18n-hint: Auto duck is the name of an effect that 'ducks' (reduces the volume)
                 * of the audio automatically when there is sound on another track.  Not as
                 * in 'Donald-Duck'!*/
-               _("Auto Duck"), wxICON_ERROR, mUIParent);
+               wxICON_ERROR);
             return false;
          }
       }
@@ -245,9 +245,9 @@ bool EffectAutoDuck::Init()
 
    if (!controlTrackCandidate)
    {
-      wxMessageBox(
+      Effect::MessageBox(
          _("Auto Duck needs a control track which must be placed below the selected track(s)."),
-         _("Auto Duck"), wxICON_ERROR, mUIParent);
+         wxICON_ERROR);
       return false;
    }
 
diff --git a/src/effects/ClickRemoval.cpp b/src/effects/ClickRemoval.cpp
index 19d1f73c0..68fc0d143 100644
--- a/src/effects/ClickRemoval.cpp
+++ b/src/effects/ClickRemoval.cpp
@@ -192,9 +192,8 @@ bool EffectClickRemoval::Process()
       count++;
    }
    if (bGoodResult && !mbDidSomething) // Processing successful, but ineffective.
-      wxMessageBox(
+      Effect::MessageBox(
          wxString::Format(_("Algorithm not effective on this audio. Nothing changed.")),
-         GetName(),
          wxOK | wxICON_ERROR);
 
    this->ReplaceProcessedTracks(bGoodResult && mbDidSomething);
@@ -205,10 +204,9 @@ bool EffectClickRemoval::ProcessOne(int count, WaveTrack * track, sampleCount st
 {
    if (len <= windowSize / 2)
    {
-      wxMessageBox(
+      Effect::MessageBox(
          wxString::Format(_("Selection must be larger than %d samples."),
                           windowSize / 2),
-         GetName(),
          wxOK | wxICON_ERROR);
       return false;
    }
diff --git a/src/effects/Echo.cpp b/src/effects/Echo.cpp
index cff1e0b23..c0194d0b5 100644
--- a/src/effects/Echo.cpp
+++ b/src/effects/Echo.cpp
@@ -104,7 +104,7 @@ bool EffectEcho::ProcessInitialize(sampleCount WXUNUSED(totalLen), ChannelNames
       history.reinit(histLen, true);
    }
    catch ( const std::bad_alloc& ) {
-      wxMessageBox(_("Requested value exceeds memory capacity."));
+      Effect::MessageBox(_("Requested value exceeds memory capacity."));
       return false;
    }
 
diff --git a/src/effects/Equalization.cpp b/src/effects/Equalization.cpp
index b75c581c8..ae86c4ef7 100644
--- a/src/effects/Equalization.cpp
+++ b/src/effects/Equalization.cpp
@@ -372,10 +372,9 @@ bool EffectEqualization::ValidateUI()
    // we offer to save it.
    while (mDisallowCustom && mCurveName.IsSameAs(wxT("unnamed")))
    {
-      wxMessageBox(_("To use this EQ curve in a batch chain, please choose a new name for it.\nChoose the 'Save/Manage Curves...' button and rename the 'unnamed' curve, then use that one."),
-         _("EQ Curve needs a different name"),
+      Effect::MessageBox(_("To use this EQ curve in a batch chain, please choose a new name for it.\nChoose the 'Save/Manage Curves...' button and rename the 'unnamed' curve, then use that one."),
          wxOK | wxCENTRE,
-         mUIParent);
+         _("EQ Curve needs a different name"));
       return false;
    }
 
@@ -484,7 +483,7 @@ bool EffectEqualization::Init()
          }
          else {
             if (track->GetRate() != rate) {
-               wxMessageBox(_("To apply Equalization, all selected tracks must have the same sample rate."));
+               Effect::MessageBox(_("To apply Equalization, all selected tracks must have the same sample rate."));
                return(false);
             }
          }
@@ -496,9 +495,9 @@ bool EffectEqualization::Init()
    mHiFreq = rate / 2.0;
    // Unlikely, but better than crashing.
    if (mHiFreq <= loFreqI) {
-      wxMessageBox( _("Track sample rate is too low for this effect."),
-                    _("Effect Unavailable"),
-                    wxOK | wxCENTRE);
+      Effect::MessageBox( _("Track sample rate is too low for this effect."),
+                    wxOK | wxCENTRE,
+                    _("Effect Unavailable"));
       return(false);
    }
 
@@ -1394,9 +1393,9 @@ void EffectEqualization::LoadCurves(const wxString &fileName, bool append)
       /* i18n-hint: EQ stands for 'Equalization'.*/
       msg.Printf(_("Error Loading EQ Curves from file:\n%s\nError message says:\n%s"), fullPath.c_str(), reader.GetErrorStr().c_str());
       // Inform user of load failure
-      wxMessageBox( msg,
-         _("Error Loading EQ Curves"),
-         wxOK | wxCENTRE);
+      Effect::MessageBox( msg,
+         wxOK | wxCENTRE,
+         _("Error Loading EQ Curves"));
       mCurves.Add( _("unnamed") );  // we always need a default curve to use
       return;
    }
@@ -1790,7 +1789,9 @@ void EffectEqualization::setCurve(const wxString &curveName)
          break;
    if( i == mCurves.GetCount())
    {
-      wxMessageBox( _("Requested curve not found, using 'unnamed'"), _("Curve not found"), wxOK|wxICON_ERROR );
+      Effect::MessageBox( _("Requested curve not found, using 'unnamed'"),
+         wxOK|wxICON_ERROR,
+         _("Curve not found") );
       setCurve((int) mCurves.GetCount()-1);
    }
    else
@@ -3220,7 +3221,9 @@ void EditCurvesDialog::OnUp(wxCommandEvent & WXUNUSED(event))
    {
       if ( item == mList->GetItemCount()-1)
       {  // 'unnamed' always stays at the bottom
-         wxMessageBox(_("'unnamed' always stays at the bottom of the list"), _("'unnamed' is special"));   // these could get tedious!
+         mEffect->Effect::MessageBox(_("'unnamed' always stays at the bottom of the list"),
+                            Effect::DefaultMessageBoxStyle,
+                            _("'unnamed' is special"));   // these could get tedious!
          return;
       }
       state = mList->GetItemState(item-1, wxLIST_STATE_SELECTED);
@@ -3338,11 +3341,11 @@ void EditCurvesDialog::OnRename(wxCommandEvent & WXUNUSED(event))
                bad = true;
                if( curve == item )  // trying to rename a curve with the same name
                {
-                  wxMessageBox( _("Name is the same as the original one"), _("Same name"), wxOK );
+                  mEffect->Effect::MessageBox( _("Name is the same as the original one"), wxOK, _("Same name") );
                   break;
                }
-               int answer = wxMessageBox( _("Overwrite existing curve '") + name +_("'?"),
-                  _("Curve exists"), wxYES_NO );
+               int answer = mEffect->Effect::MessageBox( _("Overwrite existing curve '") + name +_("'?"),
+                  wxYES_NO, _("Curve exists") );
                if (answer == wxYES)
                {
                   bad = false;
@@ -3413,8 +3416,8 @@ void EditCurvesDialog::OnDelete(wxCommandEvent & WXUNUSED(event))
    {
       if(item == mList->GetItemCount()-1)   //unnamed
       {
-         wxMessageBox(_("You cannot delete the 'unnamed' curve."),
-            _("Can't delete 'unnamed'"), wxOK | wxCENTRE, this);
+         mEffect->Effect::MessageBox(_("You cannot delete the 'unnamed' curve."),
+             wxOK | wxCENTRE, _("Can't delete 'unnamed'"));
       }
       else
       {
@@ -3423,7 +3426,7 @@ void EditCurvesDialog::OnDelete(wxCommandEvent & WXUNUSED(event))
          quest = wxString(_("Delete '")) + mEditCurves[ item-deleted ].Name + _("' ?");
 
          // Ask for confirmation before removal
-         int ans = wxMessageBox( quest, _("Confirm Deletion"), wxYES_NO | wxCENTRE, this );
+         int ans = mEffect->Effect::MessageBox( quest, wxYES_NO | wxCENTRE, _("Confirm Deletion") );
          if( ans == wxYES )
          {  // Remove the curve from the array
             mEditCurves.RemoveAt( item-deleted );
@@ -3453,7 +3456,7 @@ void EditCurvesDialog::OnDelete(wxCommandEvent & WXUNUSED(event))
       else
          return;
    // Ask for confirmation before removal
-   int ans = wxMessageBox( quest, _("Confirm Deletion"), wxYES_NO | wxCENTRE, this );
+   int ans = mEffect->Effect::MessageBox( quest, wxYES_NO | wxCENTRE, _("Confirm Deletion") );
    if( ans == wxYES )
    {  // Remove the curve(s) from the array
       // Take care, mList and mEditCurves will get out of sync as curves are deleted
@@ -3462,8 +3465,9 @@ void EditCurvesDialog::OnDelete(wxCommandEvent & WXUNUSED(event))
       {
          if(item == mList->GetItemCount()-1)   //unnamed
          {
-            wxMessageBox(_("You cannot delete the 'unnamed' curve, it is special."),
-               _("Can't delete 'unnamed'"), wxOK | wxCENTRE, this);
+            mEffect->Effect::MessageBox(_("You cannot delete the 'unnamed' curve, it is special."),
+               Effect::DefaultMessageBoxStyle,
+               _("Can't delete 'unnamed'"));
          }
          else
          {
@@ -3521,7 +3525,9 @@ void EditCurvesDialog::OnExport( wxCommandEvent & WXUNUSED(event))
          i++;
       }
       else
-         wxMessageBox(_("You cannot export 'unnamed' curve, it is special."), _("Cannot Export 'unnamed'"));
+         mEffect->Effect::MessageBox(_("You cannot export 'unnamed' curve, it is special."),
+                            Effect::DefaultMessageBoxStyle,
+                            _("Cannot Export 'unnamed'"));
       // get next selected item
       item = mList->GetNextItem(item, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
    }
@@ -3532,10 +3538,14 @@ void EditCurvesDialog::OnExport( wxCommandEvent & WXUNUSED(event))
       mEffect->mCurves = temp;
       wxString message;
       message.Printf(_("%d curves exported to %s"), i, fileName.c_str());
-      wxMessageBox(message, _("Curves exported"));
+      mEffect->Effect::MessageBox(message,
+                                  Effect::DefaultMessageBoxStyle,
+                                  _("Curves exported"));
    }
    else
-      wxMessageBox(_("No curves exported"), _("No curves exported"));
+      mEffect->Effect::MessageBox(_("No curves exported"),
+                                  Effect::DefaultMessageBoxStyle,
+                                  _("No curves exported"));
 }
 
 void EditCurvesDialog::OnLibrary( wxCommandEvent & WXUNUSED(event))
diff --git a/src/effects/Equalization48x.cpp b/src/effects/Equalization48x.cpp
index 028d188da..76787f7ac 100644
--- a/src/effects/Equalization48x.cpp
+++ b/src/effects/Equalization48x.cpp
@@ -506,7 +506,7 @@ bool EffectEqualization48x::Benchmark(EffectEqualization* effectEqualization)
    wxTimeSpan tsDefaultThreaded(0, 0, 0, times[3]);
    wxTimeSpan tsDefault(0, 0, 0, times[4]);
 
-   wxMessageBox(wxString::Format(_("Benchmark times:\nOriginal: %s\nDefault Segmented: %s\nDefault Threaded: %s\nSSE: %s\nSSE Threaded: %s\n"),tsDefault.Format(wxT("%M:%S.%l")).c_str(), 
+   Effect::MessageBox(wxString::Format(_("Benchmark times:\nOriginal: %s\nDefault Segmented: %s\nDefault Threaded: %s\nSSE: %s\nSSE Threaded: %s\n"),tsDefault.Format(wxT("%M:%S.%l")).c_str(), 
       tsDefaultEnhanced.Format(wxT("%M:%S.%l")).c_str(), tsDefaultThreaded.Format(wxT("%M:%S.%l")).c_str(),tsSSE.Format(wxT("%M:%S.%l")).c_str(),tsSSEThreaded.Format(wxT("%M:%S.%l")).c_str()));
    return bBreakLoop; // return !bBreakLoop ?
 }
diff --git a/src/effects/FindClipping.cpp b/src/effects/FindClipping.cpp
index a52cd0a73..d17ffd177 100644
--- a/src/effects/FindClipping.cpp
+++ b/src/effects/FindClipping.cpp
@@ -172,7 +172,7 @@ bool EffectFindClipping::ProcessOne(LabelTrack * lt,
       buffer.reinit(blockSize);
    }
    catch( const std::bad_alloc & ) {
-      wxMessageBox(_("Requested value exceeds memory capacity."));
+      Effect::MessageBox(_("Requested value exceeds memory capacity."));
       return false;
    }
 
diff --git a/src/effects/Generator.cpp b/src/effects/Generator.cpp
index 48c025a2a..e7afe2765 100644
--- a/src/effects/Generator.cpp
+++ b/src/effects/Generator.cpp
@@ -54,9 +54,10 @@ bool Generator::Process()
              track->IsEmpty(mT0, mT1+1.0/track->GetRate()) &&
              !track->IsEmpty(mT0, mT0+GetDuration()-(mT1-mT0)-1.0/track->GetRate()))
          {
-            wxMessageBox(
+            Effect::MessageBox(
                   _("There is not enough room available to generate the audio"),
-                  _("Error"), wxICON_STOP);
+                  wxICON_STOP,
+                  _("Error"));
             Failure();
             return false;
          }
diff --git a/src/effects/NoiseReduction.cpp b/src/effects/NoiseReduction.cpp
index 7da7f9cc3..f12368be6 100644
--- a/src/effects/NoiseReduction.cpp
+++ b/src/effects/NoiseReduction.cpp
@@ -206,7 +206,7 @@ public:
    bool PromptUser(EffectNoiseReduction *effect,
       wxWindow *parent, bool bHasProfile, bool bAllowTwiddleSettings);
    bool PrefsIO(bool read);
-   bool Validate() const;
+   bool Validate(EffectNoiseReduction *effect) const;
 
    size_t WindowSize() const { return 1u << (3 + mWindowSizeChoice); }
    unsigned StepsPerWindow() const { return 1u << (1 + mStepsPerWindowChoice); }
@@ -576,20 +576,20 @@ bool EffectNoiseReduction::Settings::PrefsIO(bool read)
    }
 }
 
-bool EffectNoiseReduction::Settings::Validate() const
+bool EffectNoiseReduction::Settings::Validate(EffectNoiseReduction *effect) const
 {
    if (StepsPerWindow() < windowTypesInfo[mWindowTypes].minSteps) {
-      ::wxMessageBox(_("Steps per block are too few for the window types."));
+      effect->Effect::MessageBox(_("Steps per block are too few for the window types."));
       return false;
    }
 
    if (StepsPerWindow() > WindowSize()) {
-      ::wxMessageBox(_("Steps per block cannot exceed the window size."));
+      effect->Effect::MessageBox(_("Steps per block cannot exceed the window size."));
       return false;
    }
 
    if (mMethod == DM_MEDIAN && StepsPerWindow() > 4) {
-      ::wxMessageBox(_("Median method is not implemented for more than four steps per window."));
+      effect->Effect::MessageBox(_("Median method is not implemented for more than four steps per window."));
       return false;
    }
 
@@ -616,12 +616,12 @@ bool EffectNoiseReduction::Process()
    }
    else if (mStatistics->mWindowSize != mSettings->WindowSize()) {
       // possible only with advanced settings
-      ::wxMessageBox(_("You must specify the same window size for steps 1 and 2."));
+      ::Effect::MessageBox(_("You must specify the same window size for steps 1 and 2."));
       return false;
    }
    else if (mStatistics->mWindowTypes != mSettings->mWindowTypes) {
       // A warning only
-      ::wxMessageBox(_("Warning: window types are not the same as for profiling."));
+      ::Effect::MessageBox(_("Warning: window types are not the same as for profiling."));
    }
 
    Worker worker(*mSettings, mStatistics->mRate
@@ -653,9 +653,9 @@ bool EffectNoiseReduction::Worker::Process
    while (track) {
       if (track->GetRate() != mSampleRate) {
          if (mDoProfile)
-            ::wxMessageBox(_("All noise profile data must have the same sample rate."));
+            effect.Effect::MessageBox(_("All noise profile data must have the same sample rate."));
          else
-            ::wxMessageBox(_("The sample rate of the noise profile must match that of the sound to be processed."));
+            effect.Effect::MessageBox(_("The sample rate of the noise profile must match that of the sound to be processed."));
          return false;
       }
 
@@ -679,7 +679,7 @@ bool EffectNoiseReduction::Worker::Process
 
    if (mDoProfile) {
       if (statistics.mTotalWindows == 0) {
-         ::wxMessageBox(_("Selected noise profile is too short."));
+         effect.Effect::MessageBox(_("Selected noise profile is too short."));
          return false;
       }
    }
@@ -1851,7 +1851,7 @@ bool EffectNoiseReduction::Dialog::TransferDataFromWindow()
    wxCommandEvent dummy;
    OnNoiseReductionChoice(dummy);
 
-   return mTempSettings.Validate();
+   return mTempSettings.Validate(m_pEffect);
 }
 
 void EffectNoiseReduction::Dialog::OnText(wxCommandEvent &event)
diff --git a/src/effects/Paulstretch.cpp b/src/effects/Paulstretch.cpp
index 7eff06e9e..8e6645142 100644
--- a/src/effects/Paulstretch.cpp
+++ b/src/effects/Paulstretch.cpp
@@ -255,7 +255,7 @@ bool EffectPaulstretch::ProcessOne(WaveTrack *track,double t0,double t1,int coun
 
    const auto stretch_buf_size = GetBufferSize(track->GetRate());
    if (stretch_buf_size == 0) {
-      ::wxMessageBox( badAllocMessage );
+      ::Effect::MessageBox( badAllocMessage );
       return false;
    }
 
@@ -268,7 +268,7 @@ bool EffectPaulstretch::ProcessOne(WaveTrack *track,double t0,double t1,int coun
    const auto minDuration = stretch_buf_size * 2 + 1;
    if (minDuration < stretch_buf_size) {
       // overflow!
-      ::wxMessageBox( badAllocMessage );
+      ::Effect::MessageBox( badAllocMessage );
       return false;
    }
 
@@ -284,30 +284,30 @@ bool EffectPaulstretch::ProcessOne(WaveTrack *track,double t0,double t1,int coun
 
          /* i18n-hint: 'Time Resolution' is the name of a control in the Paulstretch effect.*/
          if ((minDuration / mProjectRate) < defaultPreviewLen) {
-            ::wxMessageBox (wxString::Format(_("Audio selection too short to preview.\n\n"
+            ::Effect::MessageBox (wxString::Format(_("Audio selection too short to preview.\n\n"
                                                "Try increasing the audio selection to at least %.1f seconds,\n"
                                                "or reducing the 'Time Resolution' to less than %.1f seconds."),
                                              (minDuration / track->GetRate()) + 0.05, // round up to 1/10 s.
                                              floor(maxTimeRes * 10.0) / 10.0),
-                            GetName(), wxOK | wxICON_EXCLAMATION);
+                            wxOK | wxICON_EXCLAMATION);
          }
          else {
             /* i18n-hint: 'Time Resolution' is the name of a control in the Paulstretch effect.*/
-            ::wxMessageBox (wxString::Format(_("Unable to Preview.\n\n"
+            ::Effect::MessageBox (wxString::Format(_("Unable to Preview.\n\n"
                                                "For the current audio selection, the maximum\n"
                                                "'Time Resolution' is %.1f seconds."),
                                              floor(maxTimeRes * 10.0) / 10.0),
-                            GetName(), wxOK | wxICON_EXCLAMATION);
+                            wxOK | wxICON_EXCLAMATION);
          }
       }
       else {
          /* i18n-hint: 'Time Resolution' is the name of a control in the Paulstretch effect.*/
-         ::wxMessageBox (wxString::Format(_("The 'Time Resolution' is too long for the selection.\n\n"
+         ::Effect::MessageBox (wxString::Format(_("The 'Time Resolution' is too long for the selection.\n\n"
                                             "Try increasing the audio selection to at least %.1f seconds,\n"
                                             "or reducing the 'Time Resolution' to less than %.1f seconds."),
                                           (minDuration / track->GetRate()) + 0.05, // round up to 1/10 s.
                                           floor(maxTimeRes * 10.0) / 10.0),
-                         GetName(), wxOK | wxICON_EXCLAMATION);
+                         wxOK | wxICON_EXCLAMATION);
       }
 
       return false;
@@ -394,7 +394,7 @@ bool EffectPaulstretch::ProcessOne(WaveTrack *track,double t0,double t1,int coun
       return !cancelled;
    }
    catch ( const std::bad_alloc& ) {
-      ::wxMessageBox( badAllocMessage );
+      ::Effect::MessageBox( badAllocMessage );
       return false;
    }
 };
diff --git a/src/effects/Repair.cpp b/src/effects/Repair.cpp
index 03d3cea76..afd82e6fe 100644
--- a/src/effects/Repair.cpp
+++ b/src/effects/Repair.cpp
@@ -91,7 +91,7 @@ bool EffectRepair::Process()
          const auto repair1 = track->TimeToLongSamples(repair_t1);
          const auto repairLen = repair1 - repair0;
          if (repairLen > 128) {
-            ::wxMessageBox(_("The Repair effect is intended to be used on very short sections of damaged audio (up to 128 samples).\n\nZoom in and select a tiny fraction of a second to repair."));
+            ::Effect::MessageBox(_("The Repair effect is intended to be used on very short sections of damaged audio (up to 128 samples).\n\nZoom in and select a tiny fraction of a second to repair."));
             bGoodResult = false;
             break;
          }
@@ -108,7 +108,7 @@ bool EffectRepair::Process()
          const auto len = s1 - s0;
 
          if (s0 == repair0 && s1 == repair1) {
-            ::wxMessageBox(_("Repair works by using audio data outside the selection region.\n\nPlease select a region that has audio touching at least one side of it.\n\nThe more surrounding audio, the better it performs."));
+            ::Effect::MessageBox(_("Repair works by using audio data outside the selection region.\n\nPlease select a region that has audio touching at least one side of it.\n\nThe more surrounding audio, the better it performs."));
    ///            The Repair effect needs some data to go on.\n\nPlease select an area to repair with some audio on at least one side (the more the better)."));
             bGoodResult = false;
             break;
diff --git a/src/effects/ScienFilter.cpp b/src/effects/ScienFilter.cpp
index f32be322a..36f1231ac 100644
--- a/src/effects/ScienFilter.cpp
+++ b/src/effects/ScienFilter.cpp
@@ -348,7 +348,7 @@ bool EffectScienFilter::Init()
          {
             if (t->GetRate() != rate)
             {
-               wxMessageBox(_("To apply a filter, all selected tracks must have the same sample rate."));
+               Effect::MessageBox(_("To apply a filter, all selected tracks must have the same sample rate."));
                return false;
             }
          }
diff --git a/src/effects/TruncSilence.cpp b/src/effects/TruncSilence.cpp
index 04d0aeecd..21e34db96 100644
--- a/src/effects/TruncSilence.cpp
+++ b/src/effects/TruncSilence.cpp
@@ -288,7 +288,7 @@ bool EffectTruncSilence::ProcessIndependently()
                if (track2->GetKind() == Track::Wave &&
                   !(track2 == track || track2 == link) &&
                   track2->GetSelected()) {
-                  ::wxMessageBox(_("When truncating independently, there may only be one selected audio track in each Sync-Locked Track Group."));
+                  ::Effect::MessageBox(_("When truncating independently, there may only be one selected audio track in each Sync-Locked Track Group."));
                   return false;
                }
             }
diff --git a/src/effects/nyquist/Nyquist.cpp b/src/effects/nyquist/Nyquist.cpp
index af4f842c4..21d233b39 100644
--- a/src/effects/nyquist/Nyquist.cpp
+++ b/src/effects/nyquist/Nyquist.cpp
@@ -451,10 +451,10 @@ bool NyquistEffect::Init()
       }
 
       if (!bAllowSpectralEditing || ((mF0 < 0.0) && (mF1 < 0.0))) {
-         wxMessageBox(_("To use 'Spectral effects', enable 'Spectral Selection'\n"
+         Effect::MessageBox(_("To use 'Spectral effects', enable 'Spectral Selection'\n"
                         "in the track Spectrogram settings and select the\n"
                         "frequency range for the effect to act on."), 
-            _("Error"), wxOK | wxICON_EXCLAMATION | wxCENTRE);
+            wxOK | wxICON_EXCLAMATION | wxCENTRE, _("Error"));
 
          return false;
       }
@@ -665,9 +665,8 @@ bool NyquistEffect::Process()
 
             mCurTrack[1] = (WaveTrack *)iter.Next();
             if (mCurTrack[1]->GetRate() != mCurTrack[0]->GetRate()) {
-               wxMessageBox(_("Sorry, cannot apply effect on stereo tracks where the tracks don't match."),
-                            wxT("Nyquist"),
-                            wxOK | wxCENTRE, mUIParent);
+               Effect::MessageBox(_("Sorry, cannot apply effect on stereo tracks where the tracks don't match."),
+                            wxOK | wxCENTRE);
                success = false;
                goto finish;
             }
@@ -690,7 +689,7 @@ bool NyquistEffect::Process()
 _("Selection too long for Nyquist code.\nMaximum allowed selection is %ld samples\n(about %.1f hours at 44100 Hz sample rate)."),
                (long)NYQ_MAX_LEN, hours
             );
-            wxMessageBox(message, _("Nyquist Error"), wxOK | wxCENTRE);
+            Effect::MessageBox(message, wxOK | wxCENTRE, _("Nyquist Error"));
             if (!mProjectChanged)
                em.SetSkipStateFlag(true);
             return false;
@@ -1213,7 +1212,7 @@ bool NyquistEffect::ProcessOne()
    if (rval == nyx_string) {
       wxString msg = NyquistToWxString(nyx_get_string());
       if (!msg.IsEmpty())  // Not currently a documented feature, but could be useful as a No-Op.
-         wxMessageBox(msg, mName, wxOK | wxCENTRE, mUIParent);
+         Effect::MessageBox(msg);
 
       // True if not process type.
       // If not returning audio from process effect,
@@ -1226,8 +1225,7 @@ bool NyquistEffect::ProcessOne()
       wxString str;
       str.Printf(_("Nyquist returned the value:") + wxString(wxT(" %f")),
                  nyx_get_double());
-      wxMessageBox(str, wxT("Nyquist"),
-                   wxOK | wxCENTRE, mUIParent);
+      Effect::MessageBox(str);
       return (GetType() != EffectTypeProcess || mIsPrompt);
    }
 
@@ -1235,8 +1233,7 @@ bool NyquistEffect::ProcessOne()
       wxString str;
       str.Printf(_("Nyquist returned the value:") + wxString(wxT(" %d")),
                  nyx_get_int());
-      wxMessageBox(str, wxT("Nyquist"),
-                   wxOK | wxCENTRE, mUIParent);
+      Effect::MessageBox(str);
       return (GetType() != EffectTypeProcess || mIsPrompt);
    }
 
@@ -1275,23 +1272,17 @@ bool NyquistEffect::ProcessOne()
 
    int outChannels = nyx_get_audio_num_channels();
    if (outChannels > (int)mCurNumChannels) {
-      wxMessageBox(_("Nyquist returned too many audio channels.\n"),
-                   wxT("Nyquist"),
-                   wxOK | wxCENTRE, mUIParent);
+      Effect::MessageBox(_("Nyquist returned too many audio channels.\n"));
       return false;
    }
 
    if (outChannels == -1) {
-      wxMessageBox(_("Nyquist returned one audio channel as an array.\n"),
-                   wxT("Nyquist"),
-                   wxOK | wxCENTRE, mUIParent);
+      Effect::MessageBox(_("Nyquist returned one audio channel as an array.\n"));
       return false;
    }
 
    if (outChannels == 0) {
-      wxMessageBox(_("Nyquist returned an empty array.\n"),
-                   wxT("Nyquist"),
-                   wxOK | wxCENTRE, mUIParent);
+      Effect::MessageBox(_("Nyquist returned an empty array.\n"));
       return false;
    }
 
@@ -1340,9 +1331,7 @@ bool NyquistEffect::ProcessOne()
       mOutputTime = outputTrack[i]->GetEndTime();
 
       if (mOutputTime <= 0) {
-         wxMessageBox(_("Nyquist returned nil audio.\n"),
-                      wxT("Nyquist"),
-                      wxOK | wxCENTRE, mUIParent);
+         Effect::MessageBox(_("Nyquist returned nil audio.\n"));
          return true;
       }
    }
@@ -1740,7 +1729,7 @@ void NyquistEffect::Parse(const wxString &line)
                        tokens[3].c_str(), mFileName.GetFullPath().c_str());
 
             // Too disturbing to show alert before Audacity frame is up.
-            //    wxMessageBox(str, wxT("Nyquist Warning"), wxOK | wxICON_EXCLAMATION);
+            //    Effect::MessageBox(str, wxT("Nyquist Warning"), wxOK | wxICON_EXCLAMATION);
 
             // Note that the AudacityApp's mLogger has not yet been created,
             // so this brings up an alert box, but after the Audacity frame is up.
@@ -1854,11 +1843,11 @@ bool NyquistEffect::ParseProgram(wxInputStream & stream)
    {
       /* i1n-hint: SAL and LISP are names for variant syntaxes for the
        Nyquist programming language.  Leave them, and 'return', untranslated. */
-      wxMessageBox(_("Your code looks like SAL syntax, but there is no \'return\' statement.\n\
+      Effect::MessageBox(_("Your code looks like SAL syntax, but there is no \'return\' statement.\n\
 For SAL, use a return statement such as:\n\treturn *track* * 0.1\n\
 or for LISP, begin with an open parenthesis such as:\n\t(mult *track* 0.1)\n ."),
-                   _("Error in Nyquist code"),
-                   wxOK | wxCENTRE);
+                  Effect::DefaultMessageBoxStyle,
+                   _("Error in Nyquist code"));
       /* i18n-hint: refers to programming "languages" */
       mInitError = _("Could not determine language");
       return false;
@@ -2311,8 +2300,7 @@ void NyquistEffect::OnLoad(wxCommandEvent & WXUNUSED(evt))
 {
    if (mCommandText->IsModified())
    {
-      if (wxMessageBox(_("Current program has been modified.\nDiscard changes?"),
-                       GetName(),
+      if (Effect::MessageBox(_("Current program has been modified.\nDiscard changes?"),
                        wxYES_NO) == wxNO)
       {
          return;
@@ -2335,7 +2323,7 @@ void NyquistEffect::OnLoad(wxCommandEvent & WXUNUSED(evt))
 
    if (!mCommandText->LoadFile(mFileName.GetFullPath()))
    {
-      wxMessageBox(_("File could not be loaded"), GetName());
+      Effect::MessageBox(_("File could not be loaded"));
    }
 }
 
@@ -2357,7 +2345,7 @@ void NyquistEffect::OnSave(wxCommandEvent & WXUNUSED(evt))
 
    if (!mCommandText->SaveFile(mFileName.GetFullPath()))
    {
-      wxMessageBox(_("File could not be saved"), GetName());
+      Effect::MessageBox(_("File could not be saved"));
    }
 }
 
diff --git a/src/effects/vamp/VampEffect.cpp b/src/effects/vamp/VampEffect.cpp
index 996ee9ea1..9f9ff0756 100644
--- a/src/effects/vamp/VampEffect.cpp
+++ b/src/effects/vamp/VampEffect.cpp
@@ -324,7 +324,7 @@ bool VampEffect::Init()
 
          if (left->GetRate() != right->GetRate())
          {
-            wxMessageBox(_("Sorry, Vamp Plug-ins cannot be run on stereo tracks where the individual channels of the track do not match."));
+            Effect::MessageBox(_("Sorry, Vamp Plug-ins cannot be run on stereo tracks where the individual channels of the track do not match."));
             return false;
          }
       }
@@ -343,7 +343,7 @@ bool VampEffect::Init()
    mPlugin.reset(loader->loadPlugin(mKey, mRate, Vamp::HostExt::PluginLoader::ADAPT_ALL));
    if (!mPlugin)
    {
-      wxMessageBox(_("Sorry, failed to load Vamp Plug-in."));
+      Effect::MessageBox(_("Sorry, failed to load Vamp Plug-in."));
       return false;
    }
 
@@ -437,7 +437,7 @@ bool VampEffect::Process()
       {
          if (!mPlugin->initialise(channels, step, block))
          {
-            wxMessageBox(_("Sorry, Vamp Plug-in failed to initialize."));
+            Effect::MessageBox(_("Sorry, Vamp Plug-in failed to initialize."));
             return false;
          }
       }