BitBlt Problem
Author
hi everyone, im trying to draw a bitmap to my window and i have successfully done so when the image is less than about 2500 pixels. For some reason i cannot draw larger images, why might this be? Should i just limit BitBlt to draw a region of the bitmap instead of trying to draw it all at once. My goal is to be able to draw a bitmap that is at least 5000 pixels in size.
thank you
BitBlt() shouldnt have a problem with very large bitmaps but that said, why not just draw the visible portion of the bitmap?
Also, when BitBlt() fails you can use GetLastError() to find out why.
Also, when BitBlt() fails you can use GetLastError() to find out why.
Author
how can i view the results of GetLastError()? Ive tried messagebox but it doesnt work.
i eventually plan on making a picturebox like VB with 2 scroll bars (horiz, vert)
to display an image. for some reason i can only disp images with less than 2000 pixels in dimensions
i eventually plan on making a picturebox like VB with 2 scroll bars (horiz, vert)
to display an image. for some reason i can only disp images with less than 2000 pixels in dimensions
Author
i found the problem
CopyImage() fails on windows vista with an image that has a width greater than 2047 pixels.
here is a link for more details
http://support.microsoft.com/kb/935607
CopyImage() fails on windows vista with an image that has a width greater than 2047 pixels.
here is a link for more details
http://support.microsoft.com/kb/935607
Author
it doesnt, i thought that was the problem at first so thats why the topic is "BitBlt problem"
This topic is closed to new replies.
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