MFC dialog screenshot to .bmp file

[Tony321]

Hi guys can someone show me a sample code. How can I make a screenshot of mfc dialog client area and save it as a .bmp file ? So far I just get weird results i.e. black or white screen but the shape and size are right, just can't see the content as I said. Please help. THank you.

[Thomas1965]

What have you tried so far?
No point posting links you maybe have tried already.

[andywestken]

I did hit problems trying to grab a "screen shot" of an individual window not so long ago; the bitmap was the right size but totally black.

What I was doing was acquiring the DC for the window (GetWindowDC) and the using the usual CreateCompatibleDC, CreateCompatibleBitmap, BitBlt approach to capture a bitmap. Which was all black.

But the same approach worked fine to grab the whole screen. So I ended up acquiring the DC for the whole screen -- using GetDC(NULL) -- and the just BitBlt-ing the area I was interested in into the bitmap (for me this was the whole window, including the border and menu, but could just as easily be the client area.)

Andy

PS I didn't investigate the problem any further, but my problem with the DC obtained with GetWindowDC might be something to do with the way the Desktop Windows Manager (DWM) does its compositing.

[E0p9LyTq]

https://stackoverflow.com/questions/3291167/how-can-i-take-a-screenshot-in-a-windows-application

[Laxmi123]

hello!!!
I want to how can i made screen short of MFC Dialogue client location to save to .bmp any Idea about this please let me know!!!!!!

[E0p9LyTq]

I want to how

Did you do an internet search? Amazing what I found when I did one.

If it can be done using the Win32 API and C/C++, it can be done using MFC.
http://msdn.microsoft.com/en-us/library/dd183402(v=vs.85).aspx

There are ways to save a screen shot as a JPEG.
http://stackoverflow.com/questions/997175/how-can-i-take-a-screenshot-and-save-it-as-jpeg-on-windows