Since GDI+ does not return the color depth correctly in many situations, try getting the information with WIC (Windows Imaging Component).

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24614 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
TortoiseIDiff: Scrollbars should not show when unnecessary (regression of r24466)

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24615 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
TortoiseIDiff: Displayed zoom percentage should not multiply by 100 any more (regression of r24466)

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24616 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
* ability to show three images instead of just two
* two dragging bars to resize each image individually
* new command line params to load the three images
Update issue #485
This is only the first step to get issue #485 done, more to come...

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24640 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
TortoiseIDiff, image selection mode:
* remove unused buttons from the toolbar
* use a different menu
Update issue #485

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24644 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
TortoiseIDiff, image selection mode:
* add buttons to select an image
* when select button is clicked, exit and return the image code
Update issue #485

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24645 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
Replace memset with ZeroMemory.

Also, fix a couple of cases where the number of elements was used instead of the number of bytes.

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24658 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
Reduce scope of local variables
Do not reassign local variables before use
Compare values properly of type BOOL and bool

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24740 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
Remove the mis-added resource ID.

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk/src/TortoiseIDiff@24753 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac