// OFWIN.CPP  Native windows program to display test in a window.
#include <windows.h>

long WINAPI WindowProc(HWND hWnd, UINT message, WPARAM sParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, 
                    LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASS WindowClass;
    static char szAppName[] = "OFWin";
    HWND hWnd;
    MSG msg;

    WindowClass.style = CS_HREDRAW | CS_VREDRAW;
    WindowClass.lpfnWndProc = WindowProc;
    WindowClass.cbClsExtra = 0;
    WindowClass.cbWndExtra = 0;
    WindowClass.hInstance = hInstance;
    WindowClass.hIcon = LoadIcon(0, IDI_APPLICATION);
    WindowClass.hCursor = LoadCursor(0, IDC_ARROW);
    WindowClass.hbrBackground = 
        static_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
    WindowClass.lpszMenuName = 0;
    WindowClass.lpszClassName = szAppName;
    RegisterClass(&WindowClass);
    hWnd = CreateWindow( szAppName,
		"A Basic Window the Hard Way",
                WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT,
	 	CW_USEDEFAULT,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		0,
		0,
		hInstance,
		0);
    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);

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

long WINAPI WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hDC;
    PAINTSTRUCT PaintSt;
    RECT aRect;

    switch(message)
    {
	case WM_PAINT:
  	    hDC = BeginPaint(hWnd, &PaintSt);
	    GetClientRect(hWnd, &aRect);
	    SetBkMode(hDC, TRANSPARENT);
	    DrawText( hDC,
		"Hello",
		-1,
		&aRect,
		DT_SINGLELINE | DT_CENTER | DT_VCENTER);
	    EndPaint(hWnd, &PaintSt);
	    return 0;
	case WM_DESTROY:
	    PostQuitMessage(0);
	    return 0;
	default:
	    return DefWindowProc(hWnd, message, wParam, lParam);
    }
}