A couple of yields and destroys to make the overlay-load MessageDialog

display on linux/gtk

fsl/fslview/overlay.py

@@ -283,6 +283,7 @@ def loadOverlays(paths, loadFunc='default', errorFunc='default', saveDir=True):
 
     if defaultLoad:
         loadDlg.Close()
+        loadDlg.Destroy()
 
     if saveDir and len(paths) > 0:
         fslsettings.write('loadOverlayLastDir', op.dirname(paths[-1]))
@@ -333,6 +334,10 @@ def interactiveLoadOverlays(fromDir=None, **kwargs):
         return []
 
     paths  = dlg.GetPaths()
+
+    dlg.Destroy()
+    del dlg
+    
     images = loadOverlays(paths, saveDir=saveFromDir, **kwargs)
 
     return images

fsl/utils/dialog.py

@@ -59,6 +59,7 @@ class SimpleMessageDialog(wx.Dialog):
         self.Fit()
         self.Refresh()
         self.Update()
+        wx.Yield()
 
 
 class TimeoutDialog(SimpleMessageDialog):
@@ -128,7 +129,7 @@ class ProcessingDialog(SimpleMessageDialog):
         self.SetFocus()
         self.Update()
 
-        result  = self.task(*self.args, **self.kwargs)
+        result = self.task(*self.args, **self.kwargs)
         
         self.Close()
         self.Destroy()