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FriendFeedA static control to display DIBs
The main features of the CDibStatic class are:
- The dib can be loaded directly from disk
- Includes palette support
- The image is centered/stretched automatically in the control client area
The palette support is implemented using handlers for the WM_QUERYNEWPALETTE and WM_PALETTECHANGED windows messages, so you have to ensure in your program that the control receives these messages. If the palette never changes the CDib class paints the image with the right palette selected the first time. If the control is used in modal dialogs (fileopen for instance), the palette changes can be due only to other applications, thus realizing palette when gaining focus will always maintain the right colors. You can realize the palette any time you want using the DoRealizePalette member function.
This class has been used (among other things) to implement a standard file open dialog with preview (and without any custom hooks) and a completely object oriented DIBLOOK. These articles can be found on the dialogs section and the samples section respectively.
Downloads
Download demo project - 40 KbDownload source - 8 Kb
Comments
Bug, width and height are exchanged
Posted by Legacy on 08/15/2000 12:00amOriginally posted by: Albert L Faber
I noticed a small bug in the CDibStatic class, the problem occursonly when the DIB size is smaller than the Client paint area:
When I replaced the following two lines (in CDIBStatic::PaintDib method) it
seems to work correct
replace:
nDestWidth = m_DIB.Height();
nDestHeight = m_DIB.Width();
with:
nDestHeight = m_DIB.Height();
nDestWidth = m_DIB.Width();
Apprently the Width and the Height are mixed up
Reply