Improve startup time
Windows visual diff and merge for files and directories
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#2845 Improve startup time
On my WinXP system WinMerge takes over 2 seconds to start, even with a warm cache. This is due to code in BCMenu::GetTransparentBitmap() that loops using GetPixel/SetPixel which is very slow (see http://sourceforge.net/tracker/index.php?func=detail&aid=1052762&group_id=13216&atid=113216 for a similar problem). Attached is a replacement version which uses BitBlt and is much faster. With this my startup time drops to about 0.5s.
I think even more improvement could be possible if the menu icons were all loaded via BCMenu::LoadToolbar() instead of using BCMenu::ModifyODMenu(). This would load a few large bitmap resources instead of many small ones. It would require several toolbars just for this purpose so I'm not sure if it is desirable.
GetTransparentBitmap using BitBlt
Good! Startup time has never bothered me but this kind of improvement is of course very welcome. I'll test this shortly and commit it.
> It would require several toolbars just for this purpose so
> I'm not sure if it is desirable
We want several toolbars anyway - and I think that would be one important GUI improvement.
Committed to SVN trunk:
Completed: At revision: 6717
Thanks a lot!
Closing this item as the patch is in trunk.
Backported to branch R2_14 (In Revision 7324)...