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typedef struct tagBITMAPCOREHEADER { // bmch 
    DWORD   bcSize; 
    WORD    bcWidth; 
    WORD    bcHeight; 
    WORD    bcPlanes; 
    WORD    bcBitCount; 
} BITMAPCOREHEADER; 

typedef struct tagBITMAPCOREHEADER { // bmch 
    DWORD   bcSize; 
    WORD    bcWidth; 
    WORD    bcHeight; 
    WORD    bcPlanes; 
    WORD    bcBitCount; 
} BITMAPCOREHEADER; 

#include <windows.h>

BITMAPFILEHEADER bmpFileHeader;
BITMAPCOREHEADER bmpCoreHeader;

LRESULT CALLBACK WndProc(HWND hWnd , UINT msg , WPARAM wp , LPARAM lp) {
	HDC hdc;
	PAINTSTRUCT ps;
	RECT rect;
	static TCHAR chStr[1024];

	switch (msg) {
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	case WM_CREATE:
		wsprintf(chStr , 
			TEXT("FILEHEADER\n")
			TEXT("bfType = %X\nbfSize = %d\nbfReserved1 = %d\n")
			TEXT("bfReserved2 = %d\nbfOffBits = %d\n\n")

			TEXT("COREHEADER\n")
			TEXT("bcSize = %d\nbcWidth = %d\nbcHeight = %d\n")
			TEXT("bcPlanes = %d\nbcBitCount = %d") ,

			bmpFileHeader.bfType , bmpFileHeader.bfSize ,
			bmpFileHeader.bfReserved1 , bmpFileHeader.bfReserved2 ,
			bmpFileHeader.bfOffBits ,

			bmpCoreHeader.bcSize , bmpCoreHeader.bcWidth ,
			bmpCoreHeader.bcHeight , bmpCoreHeader.bcPlanes ,
			bmpCoreHeader.bcBitCount
		);
		return 0;
	case WM_PAINT:
		hdc = BeginPaint(hWnd , &ps);
		GetClientRect(hWnd , &rect);
		DrawText(hdc , chStr , -1 , &rect , DT_LEFT);
		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;
	HANDLE hFile;
	DWORD dwBytes;

	hFile = CreateFile(lpCmdLine , GENERIC_READ , 0 , NULL ,
		OPEN_EXISTING , FILE_ATTRIBUTE_NORMAL , NULL);
	if (hFile == INVALID_HANDLE_VALUE) return 1;

	ReadFile(hFile , &bmpFileHeader , sizeof (BITMAPFILEHEADER) , &dwBytes , NULL);
	if (bmpFileHeader.bfType != 0x4D42) {
		MessageBox(NULL , TEXT("This is not a bitmap file") , NULL , MB_OK);
		return 1;
	}

	ReadFile(hFile , &bmpCoreHeader , sizeof (BITMAPCOREHEADER) , &dwBytes , NULL);
	CloseHandle(hFile);

	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;
}