ビットマップ

ビットブロック転送

BOOL BitBlt(
	HDC hdcDest,
	int nXDest , int nYDest ,
	int nWidth , int nHeight ,
	HDC hdcSrc, 
	int nXSrc , int nYSrc ,
	DWORD dwRop
);

#include <windows.h>

LRESULT CALLBACK WndProc(HWND hwnd , UINT msg , WPARAM wp , LPARAM lp) {
	HDC hdc;
	PAINTSTRUCT ps;
	int x;

	switch (msg) {
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	case WM_PAINT:
		hdc = BeginPaint(hwnd , &ps);
		for (x = 0 ; x < 100 ; x += 10) {
			MoveToEx(hdc , x , 0 , NULL);
			LineTo(hdc , x , 100);
		}
		BitBlt(hdc , 300 , 0 , 100 , 100 , hdc , 0 , 0 , SRCCOPY);
		EndPaint(hwnd , &ps);
		return 0;
	}
	return DefWindowProc(hwnd , msg , wp , lp);
}

int WINAPI WinMain(HINSTANCE hInstance , HINSTANCE hPrevInstance ,
			PSTR lpCmdLine , int nCmdShow ) {
	HWND hwnd;
	MSG msg;
	WNDCLASS winc;

	winc.style		= CS_HREDRAW | CS_VREDRAW;
	winc.lpfnWndProc	= WndProc;
	winc.cbClsExtra	= winc.cbWndExtra	= 0;
	winc.hInstance		= hInstance;
	winc.hIcon		= LoadIcon(NULL , IDI_APPLICATION);
	winc.hCursor		= LoadCursor(NULL , IDC_ARROW);
	winc.hbrBackground	= (HBRUSH)GetStockObject(WHITE_BRUSH);
	winc.lpszMenuName	= NULL;
	winc.lpszClassName	= TEXT("KITTY");

	if (!RegisterClass(&winc)) return -1;

	hwnd = CreateWindow(
			TEXT("KITTY") , TEXT("Kitty on your lap") ,
			WS_OVERLAPPEDWINDOW | WS_VISIBLE ,
			CW_USEDEFAULT , CW_USEDEFAULT ,
			CW_USEDEFAULT , CW_USEDEFAULT ,
			NULL , NULL ,
			hInstance , NULL
	);

	if (hwnd == NULL) return -1;

	while(GetMessage(&msg , NULL , 0 , 0)) {
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}

BitBlt()

BOOL BitBlt(
	HDC hdcDest,
	int nXDest , int nYDest ,
	int nWidth , int nHeight ,
	HDC hdcSrc, 
	int nXSrc , int nYSrc ,
	DWORD dwRop
);