printerhdc to hdc - Forums

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Hi,

I try to copy graphics from a printerhdc (generated by GDI) to a window hdc:

invoke GetDeviceCaps,PD.hDC,HORZRES

mov  bigx,eax

invoke GetDeviceCaps,PD.hDC,VERTRES

mov  bigy,eax

invoke StretchBlt,WINDOWHDC,0,0,800,600,PD.hDC,0,0,bigx,bigy,SRCCOPY

But no graphics were copied...
Printing the printerdc to paper, it ok

I tested GetDeviceCaps -> RASTERCAPS / RC_STRETCHBLT, but the printerhdc can use StretchBlt.
BitBlt don't works, too.

Any suggestions ?

Greetings,
Nordwind64

Posted on 2003-10-26 14:31:24 by Nordwind64

printerhdc to hdc

Have you tried testing it without the stretch but just regular bitblt?

I know this is not what you want, but it might give you some clue regarding what is taking and what isnt...

:NaN:

Posted on 2003-10-26 17:12:27 by NaN

printerhdc to hdc

Hi NaN,

yes, I tested it with BitBlt. It don't work, too...
I use WinXP Home.

Regards,
Nordwind64

Posted on 2003-10-26 23:28:52 by Nordwind64

printerhdc to hdc

You can't copy an image between different devices. You have to use GetDIBits and SetDIBits.

Posted on 2003-10-27 11:45:21 by Sephiroth3

printerhdc to hdc

Hi

but I can BitBlt / StretchBlt from HDC to PRINTERHDC ! That works !!!
And the are no error messages and StrechtBlt returns nonzero (If the function succeeds, the return value is nonzero.).

Regards,
Nordwind64

Posted on 2003-10-27 13:24:26 by Nordwind64

printerhdc to hdc

Even so, your still not any further than you are... i would suggest trying Sephiroth3's suggestion, and cursing at M$ afterwards if it was the correct solution ;)

Posted on 2003-10-27 18:48:47 by NaN

printerhdc to hdc

ok, thank you.
I'm writing a printer preview, maybe I should genate a normal HDC with the printergfx and copy it to printerhdc to print. And use the hdc for previewing...
Generating DIB's is very slow...

Regards,
Nordwind64

Posted on 2003-10-27 23:42:14 by Nordwind64

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