Windows框架

#include<Windows.h>
#include<tchar.h>
#include"resource.h"

//全局变量
LPSTR g_MainFrame = "主框架";
LPSTR g_ClientFrame = "客户区框架";
LPSTR g_ChildFrame[] = { "子框架1","子框架2" };

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);

//函数执行的入口函数
int WINAPI WinMain(
   _In_ HINSTANCE hInstance,
   _In_opt_ HINSTANCE hPrevInstance,
   _In_ LPSTR lpCmdLine,
   _In_ int nShowCmd)
{

   //1.初始化需要注册的窗口信息
   WNDCLASS MainFrame = { 0 };
   MainFrame.hbrBackground = (HBRUSH)::GetStockObject(GRAY_BRUSH);//背景
   MainFrame.hCursor = ::LoadCursor(NULL, IDC_ARROW);
   MainFrame.hInstance = hInstance;
   MainFrame.lpfnWndProc = WndProc;
   MainFrame.lpszClassName = g_MainFrame;
   MainFrame.lpszMenuName = MAKEINTRESOURCE(IDR_MainFrame);//定位资源，通过MAKEINTRESOURCE转换的id， //也可以是资源名称的字符串。
   MainFrame.style = CS_VREDRAW | CS_HREDRAW;

   //2.注册MainFrame窗口
   if (!RegisterClass(&MainFrame))
   {
       MessageBox(NULL, _T("主框架注册失败!"), _T("Error"), MB_OK | MB_ICONERROR);//_T() 需用用到tchar.h头文件
   }

   //3.创建窗口
       HWND mainframe_hwnd;
       mainframe_hwnd= CreateWindow(
           g_MainFrame,
           g_ClientFrame,
           WS_OVERLAPPEDWINDOW,
           CW_USEDEFAULT,
           CW_USEDEFAULT,
           CW_USEDEFAULT,
           CW_USEDEFAULT,
           NULL,
           NULL,
           hInstance,
           NULL);
       if(!mainframe_hwnd)
           MessageBox(NULL, _T("主框架创建失败!"), _T("Error"), MB_OK | MB_ICONERROR);
   //4.显示窗口
       ShowWindow(mainframe_hwnd, nShowCmd);

//5.刷新窗口
UpdateWindow(mainframe_hwnd);

   //6.信息捕获
       MSG mainframe_msg;
       while (::GetMessage(&mainframe_msg, NULL, 0, 0))
       {
           ::TranslateMessage(&mainframe_msg);//TranslateMessage是用来把虚拟键消息转换为字符消息。
           ::DispatchMessage(&mainframe_msg);//消息调度
       }
       return mainframe_msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
   //处理消息
   switch (message)
   {
       /*1.关不窗口时，会收到该消息，PostQuitMessage()像系统表明终止当前线程，没有这个函数的话，窗口不会关闭*/
       case WM_DESTROY:
           PostQuitMessage(0);//用于相应关闭消息，否则线程不会关闭，导致系统阻塞
       return 0;
   }
   //将不需要处理的消息传递给系统作默认处理
   return DefWindowProc(hwnd, message, wParam, lParam);
}