How to use CXTPOffice2007Image::GetBitmapPixel

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   I want to draw a background gradient that matches the colors of a ribbon bar group. But I don't know how to call GetBitmapPixel. I am trying to call GetBitmapPixel with the correct "point" coordinates. I can draw the image calling like this:

pImage->DrawImage(pDC, rcClient, pImage->GetSource(0,2), CRect(0,0,0,0));

and I see what appears to be the image I see when the ribbon draws a non-highlighted group (background). I cannot seem to find the correct offset point to pass GetBitmapPixel.

It also appears that the pixel returned is not in RGB format but rather is in BGR (I can only come close to the colors I see when I draw the image if I swap the red and green when calling the GDI GradientFill API.)

Can I call GetBitmapPixel to get the values I need? If not, how can I get the colors of the two "inner bands" that I see a group image contains.

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rdhd Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2007 Location: United States Status: Offline Points: 899	Post Options Post Reply Quote rdhd Report Post Thanks(0) Quote Reply Topic: How to use CXTPOffice2007Image::GetBitmapPixel Posted: 11 February 2010 at 4:40pm
	I want to draw a background gradient that matches the colors of a ribbon bar group. But I don't know how to call GetBitmapPixel. I am trying to call GetBitmapPixel with the correct "point" coordinates. I can draw the image calling like this: pImage->DrawImage(pDC, rcClient, pImage->GetSource(0,2), CRect(0,0,0,0)); and I see what appears to be the image I see when the ribbon draws a non-highlighted group (background). I cannot seem to find the correct offset point to pass GetBitmapPixel. It also appears that the pixel returned is not in RGB format but rather is in BGR (I can only come close to the colors I see when I draw the image if I swap the red and green when calling the GDI GradientFill API.) Can I call GetBitmapPixel to get the values I need? If not, how can I get the colors of the two "inner bands" that I see a group image contains.