Easily take screenshots on Windows.

screenshot.c

#include <windows.h>

int* screenshot(int x, int y, int width, int height) {	
	HDC screen = GetDC(0);
	
	HDC memoryDC = CreateCompatibleDC(screen);
	HBITMAP memoryBMP = CreateCompatibleBitmap(screen, width, height);
	SelectObject(memoryDC, memoryBMP);	
	
	BITMAPINFO bitmapinfo;
	bitmapinfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	bitmapinfo.bmiHeader.biWidth = width;
	bitmapinfo.bmiHeader.biHeight = height;
	bitmapinfo.bmiHeader.biPlanes = 1;
	bitmapinfo.bmiHeader.biBitCount = 32;
	bitmapinfo.bmiHeader.biCompression = BI_RGB;	
	
	int *pixels = (int*)malloc(sizeof(int) * width * height);
	BitBlt(memoryDC, 0, 0, width, height, screen, x, y, SRCCOPY);	
	GetDIBits(memoryDC, memoryBMP, 0, height, pixels, &bitmapinfo, DIB_RGB_COLORS);
	
	DeleteObject(memoryBMP);
	DeleteDC(memoryDC);	
	
	return pixels;
}

/*///////////////////////////////////
	
          	Testing:
		
///////////////////////////////////*/

int main() {
	int *image = screenshot(0, 0, 500, 500);
}