screen capture in c

ok people i am a neewby to c but i do know how to program in it im saying im not an expert but i can use it

any way i want to make a screen captureing program can someone provide me with some source that will copy the screen to the clip board for the user to paste in ms paint

Search Google for your answer. There's probably a winapi function which will capture the screen. Look for the keywords: winapi screen capture

This function captures any window on screen and saves it to the clipboard:

Code:

#define RectWidth(lprc)  ((lprc)->right-(lprc)->left)
#define RectHeight(lprc) ((lprc)->bottom-(lprc)->top)

void CaptureWindow(HWND hwnd){
 HDC hdc,hdcMem;
 HBITMAP hbm,oldbm;
 RECT rc,rcCrop;
 hdc=GetWindowDC(hwnd);
 hdcMem=CreateCompatibleDC(hdc);
 SelectBitmap(hdcMem,oldbm);
 GetWindowRect(hwnd,&rc);
 SetRect(&rcCrop,0,0,RectWidth(&rc),RectHeight(&rc));
 hbm=CreateCompatibleBitmap(hdc,RectWidth(&rcCrop),
  RectHeight(&rcCrop));
 oldbm=SelectObject(hdcMem,hbm);
 BitBlt(hdcMem,0,0,RectWidth(&rcCrop),
  RectHeight(&rcCrop),hdc,0,0,SRCCOPY);
 OpenClipboard(hwnd);
 EmptyClipboard();
 SetClipboardData(CF_BITMAP,hbm);
 CloseClipboard();
 ReleaseDC(hwnd,hdc);
 DeleteDC(hdcMem);
 DeleteObject(oldbm);
}

To capture the screen, call:

CaptureWindow(GetDesktopWindow());

i have another question on this. can the print screen button on the keyboard be used somehow to achieve this?i mean can the button be emulated somehow in a program?