winmain.cpp

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//#pragma once
#include <windows.h>
#include "resource.h"
#include ".\game.h"

TCHAR szAppClassName[] = TEXT("liuchuan");                                        // WNCLASS名
TCHAR szAppTitleName[] = TEXT("忘记喧嚣______________________Battle City Demo");  // 窗口标题名
#define WIN_WIDTH  648                                                            // 窗口宽
#define WIN_HEIGHT 565                                                            // 高
// 全局变量
HINSTANCE hInst;	// 当前实例
HWND hWnd;
Game *game;
// 此代码模块中包含的函数的前向声明:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstace(HINSTANCE hInstance, int nCmdShow);
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);

// 主函数
int WINAPI WinMain(HINSTANCE hInstance,
					 HINSTANCE hPrevInstance,
					 LPTSTR lpCmdLine,
					 int nCmdShow)
{
	//消息循环
	MSG msg;
	MyRegisterClass(hInstance);
	// 执行应用程序初始化:
	if (!InitInstace(hInstance, nCmdShow))
	{
		return FALSE;
	}
	
	while (true)
	{
		if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
		{
			if (WM_QUIT == msg.message)
			{
				break;
			}
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		// 接口调用
		game->RunGame();
	}
	if (game != NULL)
	{
		delete game;
		game = NULL;
	}
	return (int)msg.wParam;					// 清空资源
}

ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbClsExtra = 0;                                        // 额外屏幕空间
	wcex.cbSize = sizeof(WNDCLASSEX);							// 消息窗口大小
	wcex.cbWndExtra = 0;										// 额外窗口
	wcex.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);	// GetStockObject返回系统内部的笔、笔刷、调色板、字体
	wcex.hCursor = LoadCursor(NULL, IDC_ARROW);					// 光标
	wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON1));				// 大图标
	wcex.hIconSm = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON1));				// 小图标
	wcex.hInstance = hInstance;									// 应用程序实例句柄
	wcex.lpfnWndProc = WndProc;                                 // 回调函数
	wcex.lpszClassName = szAppClassName;						// 窗口类名
	wcex.lpszMenuName = NULL;									// 菜单
	wcex.style = CS_HREDRAW | CS_VREDRAW;                       // 窗口样式

	//注册窗口类
	return RegisterClassEx(&wcex);								//返回szAppClassName
}

BOOL InitInstace(HINSTANCE hInstance, int nCmdShow)
{
	hInst = hInstance;           // 用实例句柄初始化全局变量
	
	hWnd = CreateWindowEx(0, szAppClassName, szAppTitleName, WS_OVERLAPPEDWINDOW,
		0, 0, WIN_WIDTH, WIN_HEIGHT, NULL, NULL, hInstance, NULL);

	if (!hWnd)					 // 高质量编程:使用指针前先确定不为NULL
	{
		return FALSE;
	}
	game = new Game(hWnd);
	MoveWindow(hWnd, 50, 50, WIN_WIDTH, WIN_HEIGHT, true);
	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);

	return TRUE;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message) 
	{
	case WM_DESTROY:
		PostQuitMessage(0); // 按ESC键关闭消息
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}