3_6-week9labweek8samplecode1.txt

c的多個教程,多個作業教學..等等,之類

// MGProg_Lab4_1.cpp : Introduction to Graphical Interface

#include "stdafx.h"
#include <stdio.h>

HWND hWnd;
HINSTANCE hInst;
HBITMAP hbmp;
HDC mdc;
HDC hdc;

// Function Declaration
ATOM	MyRegisterClass(HINSTANCE hInstance);	// Declaration and register the Windows Object
BOOL	InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

// Main Program to Start
//////////////////////////////////////////////////////////////////////////
int APIENTRY WinMain(HINSTANCE hInstance,								//
                     HINSTANCE hPrevInstance,							//
                     LPSTR     lpCmdLine,								//
                     int       nCmdShow)								//
{																		//
 	// TODO: Place code here.											//
	MSG msg;															//
																		//
	MyRegisterClass(hInstance);		// Set Windows properties			//
																		//
	// Execute the initialize function									//
	if (!InitInstance(hInstance, nCmdShow))	 // Create and Dispaly 		//
	{										 // the window				//
		return FALSE;													//
	}																	//
																		//
	// Message Loop														//
	while (GetMessage(&msg, NULL, 0, 0))								//
	{																	//
		TranslateMessage(&msg);											//
		DispatchMessage(&msg);											//
	}																	//
																		//
	return msg.wParam;													//
}																		//
//////////////////////////////////////////////////////////////////////////

// Declaration and register the Windows Object
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);
	wcex.style = CS_HREDRAW|CS_VREDRAW;
	wcex.lpfnWndProc=(WNDPROC)WndProc;
	wcex.cbClsExtra = 0;
	wcex.cbWndExtra = 0;
	wcex.hInstance = hInstance;		// The most import part
	wcex.hIcon = NULL;
	wcex.hCursor = NULL;
	wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName = NULL;
	wcex.lpszClassName = "canvas";  //It is not drawing
	wcex.hIconSm = NULL;

	return RegisterClassEx(&wcex);
}

// ********** Initialize Function *********************
// 1. To Save the instance handle into Global variable
// 2. Build up and display the windows
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
	HWND hWnd;

	hInst = hInstance;

	hWnd = CreateWindow("canvas", "The Paint Windows", WS_OVERLAPPEDWINDOW,
						CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

	if (!hWnd)
	{	
		return FALSE;
	}

	MoveWindow(hWnd, 10, 10, 600, 450, true);
	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);

	return TRUE;
}


// The Function to Handle different Events
// Message Call Back Handler
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}

	return 0;
}