32-bit color in CXTToolbar

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   Hi,
In our application we use CXTFrameWnd for our main window, with an embedded CXTToolbar member for our toolbar. We have been using a 32-bit color bitmap (i.e. w/alpha channel) as the toolbar bitmap. On the surface, this appears to work fine, although the alpha channel doesn't seem to be handled properly under Windows XP since some of the button images have a somewhat noticeable jagged white border.
Recently I encountered what I thought was an unrelated problem; a crash at program termination in OleUninitialize(). After 2 days of investigating, I finally established that the problem occurs when I perform a certain sequence of actions in a CHtmlView (not sure how relevant that is). The crash only occurs, however, when the aforementioned bitmap is loaded into the toolbar. When I commented out the single line that loads the bitmap, the crash went away.
What is the status of 32-bit bitmaps in CXTToolbar? Are there known problems with this? If it is meant to work, are there guidelines on how to a) make sure the toolbar is displayed properly with the alpha channel and b) avoid the OLE termination crash. The crash is a little strange but I can provide an example that reproduces it consistently.
Thanks in advance,
Matt

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mgertner Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 October 2003 Location: Czech Republic Status: Offline Points: 4	Post Options Post Reply Quote mgertner Report Post Thanks(0) Quote Reply Topic: 32-bit color in CXTToolbar Posted: 20 October 2003 at 11:36am
	Hi, In our application we use CXTFrameWnd for our main window, with an embedded CXTToolbar member for our toolbar. We have been using a 32-bit color bitmap (i.e. w/alpha channel) as the toolbar bitmap. On the surface, this appears to work fine, although the alpha channel doesn't seem to be handled properly under Windows XP since some of the button images have a somewhat noticeable jagged white border. Recently I encountered what I thought was an unrelated problem; a crash at program termination in OleUninitialize(). After 2 days of investigating, I finally established that the problem occurs when I perform a certain sequence of actions in a CHtmlView (not sure how relevant that is). The crash only occurs, however, when the aforementioned bitmap is loaded into the toolbar. When I commented out the single line that loads the bitmap, the crash went away. What is the status of 32-bit bitmaps in CXTToolbar? Are there known problems with this? If it is meant to work, are there guidelines on how to a) make sure the toolbar is displayed properly with the alpha channel and b) avoid the OLE termination crash. The crash is a little strange but I can provide an example that reproduces it consistently. Thanks in advance, Matt