Catch all exceptions in onPaint functions, because otherwise we show a message box. Message boxes while in a paint handler lead to a crash on win32.

Made a CATCH_ALL_ERRORS macro containing the common catch statements.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1034 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/control/card_viewer.cpp

@@ -87,7 +87,9 @@ void CardViewer::onPaint(wxPaintEvent&) {
 	// draw
 	if (!up_to_date) {
 		up_to_date = true;
-		draw(dc);
+		try {
+			draw(dc);
+		} CATCH_ALL_ERRORS(false); // don't show message boxes in onPaint!
 	}
 }