winapi - How To CaptureScreen at Virtual Desktop? -

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i run test program windows8 or 7 64/32bit

but can't capture screen when running virtual desktop

here code

hwnd h1 = createwindows(....) or dialog.. //if line remove capture code works fine  hdesktopcurrent = null; horiginalinput = null; hdesktopcurrent = getthreaddesktop(getcurrentthreadid()); horiginalinput = openinputdesktop(0, false, desktop_switchdesktop);  hdeskvirtual= null;  attr.nlength = sizeof(attr); attr.lpsecuritydescriptor = null; attr.binherithandle = true;  hdeskvirtual= createdesktopex(     "my_new_desktop_1",     null,     null,     0,     generic_all,     &attr,     0,     null);  switchdesktop(hdeskvirtual); setthreaddesktop(hdeskvirtual);  //capture here  switchdesktop(originaldesktop); setthreaddesktop(originaldesktop);

ps: when nerver create windows hwnd before switchdesktop (ex:createwindows,creatdialog...) works perfertly capture..

but create windows frame or dialog, didn't work captured blackscreen

plz..help me!


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