#include <windows.h>
#include <objidl.h>
#include <gdiplus.h>
#pragma comment (lib,"Gdiplus.lib")
using namespace Gdiplus;




VOID OnPaint(HDC hdc, int direction)
{
	Graphics graphics(hdc);
	Color Orange(255, 255, 165, 0);
	SolidBrush brush(Orange);
	Pen pen(&brush);

	PointF offset(0.0f, 0.0f);
	SizeF size(20.0f, 20.0f);

		

	switch (direction)
	{
	case 1 :	offset.X = -20.0f; MessageBox(NULL, "1", NULL, MB_OK);
				break;

	case 2 :	offset.X = 20.0f; MessageBox(NULL, "2", NULL, MB_OK);
				break;

	case 3 :	offset.Y = -20.0f; MessageBox(NULL, "3", NULL, MB_OK);
				break;

	case 4 :	offset.Y = 20.0f; MessageBox(NULL, "4", NULL, MB_OK);
				break;
	case 0 :	MessageBox(NULL, "0", NULL, MB_OK);
	}

	RectF snake(offset, size);
	graphics.DrawEllipse(&pen, snake);
}




LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);




INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR, INT iCmdShow)
{
	HWND                hWnd;
	MSG                 msg;
	WNDCLASS            wndClass;
	GdiplusStartupInput gdiplusStartupInput;
	ULONG_PTR           gdiplusToken;

	// Initialize GDI+.
	GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

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

	RegisterClass(&wndClass);

	hWnd = CreateWindow(
		TEXT("GraphicsWithGDIPlus"),   // window class name
		TEXT("Graphics with GDI+"),  // window caption
		WS_CAPTION|WS_SYSMENU,      // window style
		100,            // initial x position
		100,            // initial y position
		500,					    // initial x size
		500,				     // initial y size
		NULL,                     // parent window handle
		NULL,                     // window menu handle
		hInstance,                // program instance handle
		NULL);                    // creation parameters

	ShowWindow(hWnd, iCmdShow);
	UpdateWindow(hWnd);
	
	LRESULT lr;

	while(GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		lr = DispatchMessage(&msg);
		if ( lr == 1 )
		{
			RedrawWindow(hWnd, 0, 0, RDW_INVALIDATE);
			MessageBox(NULL, "rw", NULL, MB_OK);
		}
	}


	GdiplusShutdown(gdiplusToken);
	return msg.wParam;
}  // WinMain




LRESULT CALLBACK WndProc(HWND hWnd, UINT message, 
	WPARAM wParam, LPARAM lParam)
{
	HDC          hdc;
	PAINTSTRUCT  ps;
	static int dir = 0;

	switch(message)
	{

	case WM_KEYDOWN :
		switch ( wParam )
		{
		case VK_LEFT :	dir = 1;
						break;

		case VK_RIGHT :	dir = 2;
						break;

		case VK_UP :	dir = 3;
						break;

		case VK_DOWN :	dir = 4;
						break;
		}
		MessageBox(NULL, "key", NULL, MB_OK);
		return 1;

	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		OnPaint(hdc, dir);
		EndPaint(hWnd, &ps);
		return 0;

	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;

	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
} // WndProc