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Win32编程day06 学习笔记

2012年05月14日 ⁄ 综合 ⁄ 共 15176字 ⁄ 字号 小 中 大 ⁄ 评论关闭

一 系统菜单

  1 执行系统提供的窗口命令，例如最大化、关闭等命令。本质上和普通菜单一样，所以我们也可以在程序中使用这个菜单
   
  2 系统菜单的使用
    2.1 获取系统菜单
       GetSystemMenu

 HMENU GetSystemMenu(
    HWND hWnd, //要获取的窗口句柄
  BOOL bRevert  //获取时重置标示
 );

    bRevert: TRUE 重置 FLASE 不重置
    当Revert为TRUE时，会将菜单重新置成默认的状态，并返回菜单句柄。如果为FALSE，菜单项不重置，获取到当前系统菜单的状态。
   
    2.2 修改系统菜单，例如增加、删除
       2.2.1 AppednMenu
       2.2.2 InsertMenu
         比AppednMenu增加了一个插入菜单项的位置或ID。
       2.2.3 删除菜单项

  BOOL RemoveMenu( //
    HMENU hMenu, //菜单句柄
    UINT uPosition,//菜单项的位置或ID
    UINT uFlags );//菜单项的位置或ID的标示。

    uFlags为MF_BYCOMMAND， uPosition为菜单ID
    uFlags为MF_BYPOSITION，uPosition为菜单位置

    2.3 系统菜单的命令响应
       系统菜单的命令响应，是在WM_SYSCOMMAND中。
       WPARAM - LOWORD(wParam)为增加的菜单的ID

     int nID = LOWORD( wParam );
    switch( nID )
    {
    case 1001:
      //...
        break;
    }
View Code 

// SysMenu.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "stdio.h"

HINSTANCE g_hInst   = NULL;
HANDLE    g_hStdOut = NULL;

void OnCreate( HWND hWnd, UINT nMsg, 
              WPARAM wParam, LPARAM lParam )
{    // 获取系统菜单
    HMENU hSysMenu = 
        GetSystemMenu( hWnd, FALSE );
    // 删除菜单项
    RemoveMenu( hSysMenu, 0, MF_BYPOSITION );
    RemoveMenu( hSysMenu, 0, MF_BYPOSITION );
    RemoveMenu( hSysMenu, 0, MF_BYPOSITION );
    RemoveMenu( hSysMenu, 0, MF_BYPOSITION );
    RemoveMenu( hSysMenu, 0, MF_BYPOSITION );
    // 增加菜单项
    InsertMenu( hSysMenu, 0, MF_BYPOSITION|MF_STRING,
        1001, "测试1" );
    InsertMenu( hSysMenu, 1, MF_BYPOSITION|MF_STRING,
        1002, "测试2" );
}

void OnSysCommand( HWND hWnd, UINT nMsg,
                   WPARAM wParam, LPARAM lParam )
{
    CHAR szText[260] = { 0 };
    sprintf( szText,
        "OnSysCommand: WPARAM=%08X,LPARAM=%08X\n",
        wParam, lParam );
    WriteConsole( g_hStdOut, szText, 
        strlen(szText), NULL, NULL );

    int nID = LOWORD( wParam );
    switch( nID )
    {
    case 1001:
        MessageBox( NULL, "Hello 1001", 
            "SysMenu", MB_OK );
        break;
    case 1002:
        MessageBox( NULL, "Hello 1002", 
            "SysMenu", MB_OK );
        break;
    }
}

LRESULT CALLBACK WndProc( HWND   hWnd, 
                          UINT   nMsg,
                          WPARAM wParam,
                          LPARAM lParam )
{
    switch( nMsg )
    {
    case WM_CREATE:
        OnCreate( hWnd, nMsg, wParam, lParam );
        break;
    case WM_SYSCOMMAND:
        OnSysCommand( hWnd, nMsg, wParam, lParam );
        break;
    case WM_DESTROY:
        PostQuitMessage( 0 );
        return 0;
    }
    return DefWindowProc( hWnd, nMsg,
        wParam, lParam );
}

BOOL RegisterWnd( LPSTR pszClassName )
{
    WNDCLASSEX wce = { 0 };
    wce.cbSize        = sizeof( wce );
    wce.cbClsExtra    = 0;
    wce.cbWndExtra    = 0;
    wce.hbrBackground = HBRUSH(COLOR_WINDOW);
    wce.hCursor       = NULL;
    wce.hIcon         = NULL;
    wce.hIconSm       = NULL;
    wce.hInstance     = g_hInst;
    wce.lpfnWndProc   = WndProc;
    wce.lpszClassName = pszClassName;
    wce.lpszMenuName  = NULL;
    wce.style         = CS_HREDRAW|CS_VREDRAW;

    ATOM nAtom = RegisterClassEx( &wce );
    if( 0 ==  nAtom )
    {
        return FALSE;
    }

    return TRUE;
}

HWND CreateWnd( LPSTR pszClassName )
{
    HWND hWnd = CreateWindowEx( 0,
        pszClassName, "MyWnd", 
        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, NULL, NULL, g_hInst,
        NULL );
    return hWnd;
}

void DisplayWnd( HWND hWnd )
{
    ShowWindow( hWnd, SW_SHOW );
    UpdateWindow( hWnd );
}

void Message( )
{
    MSG msg = { 0 };
    while( GetMessage( &msg, NULL, 0, 0 ) )
    {
        TranslateMessage( &msg );
        DispatchMessage( &msg );
    }
}

void NewConsole( )
{
    AllocConsole( );
    g_hStdOut = 
        GetStdHandle( STD_OUTPUT_HANDLE );
}

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    NewConsole( );
    g_hInst = hInstance;
    RegisterWnd( "MYWND" );
    HWND hWnd = CreateWnd( "MYWND" );
    DisplayWnd( hWnd );
    Message( );
    return 0;
}

二 右键菜单
  1 右键菜单
    当在窗口点击鼠标右键时，弹出的菜单。
  2 右键菜单的使用
    2.1 创建菜单
      CreatePopupMenu
    2.2 菜单增加
     AppendMenu
    2.3 菜单的显示

BOOL TrackPopupMenu(
    HMENU hMenu, //显示的菜单句柄
    UINT uFlags, //显示的方式
  int x, //菜单的X屏幕坐标
  int y, //菜单的Y屏幕坐标
  int nReserved, //保留,必须为0
  HWND hWnd, //处理菜单命令的窗口句柄
  CONST RECT *prcRect ); //忽略

    2.4 菜单的命令处理
     WM_COMMAND
    2.5 使用右键菜单的位置
      2.5.1 WM_RBUTTONUP 消息
        在WM_RBUTTONUP中,添加菜单的创建及显示,
        右键消息坐标,转换成屏幕坐标使用.
          ClientToScreen.
      2.5.2 WM_CONTEXTMENU 消息
        用于显示右键的菜单的消息.
          WPARAM - 右键抬起时对应窗口句柄
          LPARAM - 右键抬起时鼠标的屏幕坐标位置
             LOWORD(lParam) - X屏幕坐标
             HIWORD(lParam) - Y屏幕坐标
      2.5.3 WM_RBUTTONUP和WM_CONTEXTMENU对比
        1) 坐标系不同, WM_RBUTTONUP客户区坐标,WM_CONTEXTMENU屏幕坐标
        2) 先有WM_RBUTTONUP消息,后有WM_CONTEXTMENU消息

View Code 

// PopMenu.cpp : Defines the entry point for the application.
//

#include "stdafx.h"

HINSTANCE g_hInst = NULL;

void OnRButtonUp( HWND hWnd, UINT nMsg, 
        WPARAM wParam, LPARAM lParam )
{    // 创建弹出式菜单
    HMENU hPopMenu = CreatePopupMenu( );
    // 增加菜单项
    AppendMenu( hPopMenu, MF_STRING, 1001, "测试1");
    AppendMenu( hPopMenu, MF_SEPARATOR, 0, NULL );
    AppendMenu( hPopMenu, MF_STRING, 1002, "退出");
    // 获取菜单位置
    POINT point = { 0 };
    point.x = LOWORD( lParam );
    point.y = HIWORD( lParam );
    ClientToScreen( hWnd, &point );
    // 显示菜单
    TrackPopupMenu( hPopMenu, TPM_LEFTALIGN,
        point.x, point.y, 0, hWnd, NULL );
}

void OnContextMenu( HWND hWnd, UINT nMsg, 
    WPARAM wParam, LPARAM lParam )
{   // 创建弹出式菜单
    HMENU hPopMenu = CreatePopupMenu( );
    // 增加菜单项
    AppendMenu( hPopMenu, MF_STRING, 1001, "测试2");
    AppendMenu( hPopMenu, MF_SEPARATOR, 0, NULL );
    AppendMenu( hPopMenu, MF_STRING, 1002, "退出");
    // 坐标获取
    int nX = LOWORD( lParam );
    int nY = HIWORD( lParam );
    // 显示菜单
    TrackPopupMenu( hPopMenu, TPM_LEFTALIGN,
        nX, nY, 0, hWnd, NULL );
    // 删除菜单
    DestroyMenu( hPopMenu );
}

void OnCommand( HWND hWnd, UINT nMsg, 
        WPARAM wParam, LPARAM lParam )
{
    int nCmdID = LOWORD( wParam );
    switch( nCmdID )
    {
    case 1001:
        MessageBox( NULL, "Hello Popmenu",
            "PopMenu", MB_OK );
        break;
    case 1002:
        PostQuitMessage( 0 );
        break;
    }
}



LRESULT CALLBACK WndProc( HWND   hWnd, 
                          UINT   nMsg,
                          WPARAM wParam,
                          LPARAM lParam )
{
    switch( nMsg )
    {
    case WM_RBUTTONUP:
        //OnRButtonUp( hWnd, nMsg, wParam, lParam );
        break;
    case WM_CONTEXTMENU:
        OnContextMenu( hWnd, nMsg, wParam, lParam );
        break;
    case WM_COMMAND:
        OnCommand( hWnd, nMsg, wParam, lParam );
        break;
    case WM_DESTROY:
        PostQuitMessage( 0 );
        return 0;
    }
    return DefWindowProc( hWnd, nMsg,
        wParam, lParam );
}

BOOL RegisterWnd( LPSTR pszClassName )
{
    WNDCLASSEX wce = { 0 };
    wce.cbSize        = sizeof( wce );
    wce.cbClsExtra    = 0;
    wce.cbWndExtra    = 0;
    wce.hbrBackground = HBRUSH(COLOR_WINDOW);
    wce.hCursor       = NULL;
    wce.hIcon         = NULL;
    wce.hIconSm       = NULL;
    wce.hInstance     = g_hInst;
    wce.lpfnWndProc   = WndProc;
    wce.lpszClassName = pszClassName;
    wce.lpszMenuName  = NULL;
    wce.style         = CS_HREDRAW|CS_VREDRAW;

    ATOM nAtom = RegisterClassEx( &wce );
    if( 0 ==  nAtom )
    {
        return FALSE;
    }

    return TRUE;
}

HWND CreateWnd( LPSTR pszClassName )
{
    HWND hWnd = CreateWindowEx( 0,
        pszClassName, "MyWnd", 
        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, NULL, NULL, g_hInst,
        NULL );
    return hWnd;
}

void DisplayWnd( HWND hWnd )
{
    ShowWindow( hWnd, SW_SHOW );
    UpdateWindow( hWnd );
}

void Message( )
{
    MSG msg = { 0 };
    while( GetMessage( &msg, NULL, 0, 0 ) )
    {
        TranslateMessage( &msg );
        DispatchMessage( &msg );
    }
}

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    g_hInst = hInstance;
    RegisterWnd( "MYWND" );
    HWND hWnd = CreateWnd( "MYWND" );
    DisplayWnd( hWnd );
    Message( );
    return 0;
}

三 资源的使用

  1 资源文件
    图标、光标、字符串、菜单、加速键和对话框资源,位图资源等等。
    资源脚本文件 - 扩展名为RC文件。定义了资源和相关文件等等信息。
    资源编译器 - RC.exe
   
  2 图标资源ICON
  
    2.1 常用的几种大小: 16X16, 32X32,48X48
    2.2 使用
       HICON LoadIcon(
     HINSTANCE hInstance, //应用程序的句柄
      LPCTSTR lpIconName );//图标的ID字符串
    2.3 系统提供的图标
       hInstance为空, lpIconName为定义的系统图标.
    2.4 自己绘制的图标
       hInstance为图标所在的应用程序的实例句柄
    2.5 注意点：
      一个图标文件中,可以包含多种大小、颜色不同的图标，系统使用图标时，通过大小来匹配，如果未找到大小完全一致的，那么会使用大小最接近的图标格式替换。
   
  3 光标资源
   
    3.1 光标资源
      热点 Hotspot - 可以产生鼠标点击的位置
    3.2 使用
      HCURSOR LoadCursor(
    HINSTANCE hInstance, //应用程序实例句柄
      LPCTSTR lpCursorName); //光标的ID
    3.3 系统的光标
      hInstance为空，lpCursorName指定为系统的光标即可获得
    3.4 自绘制的光标
      hInstance不能为空。
    3.5 WM_SETCURSOR消息
      当鼠标在窗口内就会产生。可以在程序执行的过程中修改鼠标样式。
        wParam - 窗口句柄;
        LOWORD(lParam) - 所在位置的标识
        HIWORD(lParam) - 鼠标的消息ID
      SetCursour 设置当前窗口的光标

View Code 

// WinRes.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"

HINSTANCE g_hInst = NULL;
 
BOOL OnSetCursor( HWND hWnd, UINT nMsg, 
    WPARAM wParam, LPARAM lParam )
{
    int nHitTest = LOWORD( lParam );
    if( HTCLIENT != nHitTest )
    {
        return FALSE;
    }

    //获得窗口的客户区
    RECT rcClient = { 0 };
    GetClientRect( hWnd, &rcClient );
    //获得当前光标的位置
    POINT ptPos = { 0 };
    GetCursorPos( &ptPos );
    ScreenToClient( hWnd, &ptPos );
    //根据位置加载光标
    HCURSOR hCursor = NULL;
    if( ptPos.x < rcClient.right/2 )
    {
        if( ptPos.y < rcClient.bottom/2 )
        {
            hCursor = LoadCursor( NULL, IDC_SIZEALL );
        }
        else
        {
            hCursor = LoadCursor( NULL, IDC_CROSS );
        }
    }
    else
    {
        if( ptPos.y < rcClient.bottom/2 )
        {
            hCursor = LoadCursor( NULL, IDC_WAIT );
        }
        else
        {
            hCursor = LoadCursor( NULL, IDC_UPARROW );
        }
    }
    // 设置光标
    SetCursor( hCursor );
    return TRUE;
}

LRESULT CALLBACK WndProc( HWND   hWnd, 
                          UINT   nMsg,
                          WPARAM wParam,
                          LPARAM lParam )
{
    switch( nMsg )
    {
    case WM_SETCURSOR:
        if( TRUE == OnSetCursor( hWnd, nMsg,
                wParam, lParam ) )
        {
            return 0;
        }
        break;
    case WM_DESTROY:
        PostQuitMessage( 0 );
        return 0;

    }
    return DefWindowProc( hWnd, nMsg,
        wParam, lParam );
}

BOOL RegisterWnd( LPSTR pszClassName )
{
    WNDCLASSEX wce = { 0 };
    wce.cbSize        = sizeof( wce );
    wce.cbClsExtra    = 0;
    wce.cbWndExtra    = 0;
    wce.hbrBackground = HBRUSH(COLOR_WINDOW);
    wce.hCursor       = 
        LoadCursor( g_hInst, MAKEINTRESOURCE(IDC_CURSOR1) );
    wce.hIcon         = 
        LoadIcon( g_hInst, MAKEINTRESOURCE(IDI_MAIN) );
    wce.hIconSm       = NULL;
    wce.hInstance     = g_hInst;
    wce.lpfnWndProc   = WndProc;
    wce.lpszClassName = pszClassName;
    wce.lpszMenuName  = NULL;
    wce.style         = CS_HREDRAW|CS_VREDRAW;

    ATOM nAtom = RegisterClassEx( &wce );
    if( 0 ==  nAtom )
    {
        return FALSE;
    }

    return TRUE;
}

HWND CreateWnd( LPSTR pszClassName )
{
    HWND hWnd = CreateWindowEx( 0,
        pszClassName, "MyWnd", 
        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, NULL, NULL, g_hInst,
        NULL );
    return hWnd;
}

void DisplayWnd( HWND hWnd )
{
    ShowWindow( hWnd, SW_SHOW );
    UpdateWindow( hWnd );
}

void Message( )
{
    MSG msg = { 0 };
    while( GetMessage( &msg, NULL, 0, 0 ) )
    {
        TranslateMessage( &msg );
        DispatchMessage( &msg );
    }
}

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    g_hInst = hInstance;
    RegisterWnd( "MYWND" );
    HWND hWnd = CreateWnd( "MYWND" );
    DisplayWnd( hWnd );
    Message( );
    return 0;
}

  4 字符串资源
 
    4.1 包含字符串的资源
    4.2 使用
      int LoadString(
      HINSTANCE hInstance,//程序句柄
       UINT uID, //字符串资源的ID
        LPTSTR lpBuffer, //存放字符串的BUFF
        int nBufferMax ); //BUFF的大小
      返回获取字符串的长度
     
  5 菜单资源
    5.1 添加菜单资源
    5.2 加载菜单资源
     HMENU LoadMenu(
      HINSTANCE hInstance, //应用程序句柄
      LPCTSTR lpMenuName );//菜单ID字符串
     返回加载成功的菜单的句柄
    5.3 命令处理
      使用添加的菜单ID的宏,在WM_COMMAND消息中,处理菜单命令.

View Code 

// WinRes.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"

HINSTANCE g_hInst = NULL;
 
BOOL OnSetCursor( HWND hWnd, UINT nMsg, 
    WPARAM wParam, LPARAM lParam )
{    //判断是否是位于客户区之上
    int nHitTest = LOWORD( lParam );
    if( HTCLIENT != nHitTest )
    {    //不在客户区，返回FALSE，
        //让DefWindowProc处理
        return FALSE;
    }
    //获得窗口的客户区
    RECT rcClient = { 0 };
    GetClientRect( hWnd, &rcClient );
    //获得当前光标的位置
    POINT ptPos = { 0 };
    GetCursorPos( &ptPos );
    ScreenToClient( hWnd, &ptPos );
    //根据位置加载光标
    HCURSOR hCursor = NULL;
    if( ptPos.x < rcClient.right/2 )
    {
        if( ptPos.y < rcClient.bottom/2 )
        {
            hCursor = LoadCursor( NULL, IDC_SIZEALL );
        }
        else
        {
            hCursor = LoadCursor( NULL, IDC_CROSS );
        }
    }
    else
    {
        if( ptPos.y < rcClient.bottom/2 )
        {
            hCursor = LoadCursor( NULL, IDC_WAIT );
        }
        else
        {
            hCursor = LoadCursor( NULL, IDC_UPARROW );
        }
    }
    // 设置光标
    SetCursor( hCursor );
    return TRUE;
}

void OnCommand( HWND hWnd, UINT nMsg, 
    WPARAM wParam, LPARAM lParam )
{
    int nCmdID = LOWORD( wParam );
    switch( nCmdID )
    {
    case ID_EXIT:
        PostQuitMessage( 0 );
        break;
    case ID_ABOUT:
        break;
    }
}

LRESULT CALLBACK WndProc( HWND   hWnd, 
                          UINT   nMsg,
                          WPARAM wParam,
                          LPARAM lParam )
{
    switch( nMsg )
    {
    case WM_COMMAND:
        OnCommand( hWnd, nMsg, wParam, lParam );
        break;
    case WM_SETCURSOR:
        if( TRUE == OnSetCursor( hWnd, nMsg,
                wParam, lParam ) )
        {
            return 0;
        }
        break;
    case WM_DESTROY:
        PostQuitMessage( 0 );
        return 0;

    }
    return DefWindowProc( hWnd, nMsg,
        wParam, lParam );
}

BOOL RegisterWnd( LPSTR pszClassName )
{
    WNDCLASSEX wce = { 0 };
    wce.cbSize        = sizeof( wce );
    wce.cbClsExtra    = 0;
    wce.cbWndExtra    = 0;
    wce.hbrBackground = HBRUSH(COLOR_WINDOW);
    wce.hCursor       = 
        LoadCursor( g_hInst, MAKEINTRESOURCE(IDC_CURSOR1) );
    wce.hIcon         = 
        LoadIcon( g_hInst, MAKEINTRESOURCE(IDI_MAIN) );
    wce.hIconSm       = NULL;
    wce.hInstance     = g_hInst;
    wce.lpfnWndProc   = WndProc;
    wce.lpszClassName = pszClassName;
    wce.lpszMenuName  = NULL;
    wce.style         = CS_HREDRAW|CS_VREDRAW;

    ATOM nAtom = RegisterClassEx( &wce );
    if( 0 ==  nAtom )
    {
        return FALSE;
    }

    return TRUE;
}

HWND CreateWnd( LPSTR pszClassName )
{
    //加载字符串资源
    CHAR szText[260] = { 0 };
    LoadString( g_hInst, IDS_MAIN, szText, 260 );
    //加载菜单
    HMENU hMenu = LoadMenu( g_hInst, 
        MAKEINTRESOURCE(IDR_MAIN) );
    //创建窗口
    HWND hWnd = CreateWindowEx( 0,
        pszClassName, szText, 
        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, NULL, hMenu, g_hInst,
        NULL );
    return hWnd;
}

void DisplayWnd( HWND hWnd )
{
    ShowWindow( hWnd, SW_SHOW );
    UpdateWindow( hWnd );
}

void Message( )
{
    MSG msg = { 0 };
    while( GetMessage( &msg, NULL, 0, 0 ) )
    {
        TranslateMessage( &msg );
        DispatchMessage( &msg );
    }
}

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    g_hInst = hInstance;
    RegisterWnd( "MYWND" );
    HWND hWnd = CreateWnd( "MYWND" );
    DisplayWnd( hWnd );
    Message( );
    return 0;
}

  6 加速键资源
    6.1 加速键的作用
      可以使用加速键执行命令. 例如Ctrl+S存盘.
    6.2 加速键资源的添加
    6.3 加速键的使用
      6.3.1 加载
       HACCEL LoadAccelerators(
     HINSTANCE hInstance,//资源所在的应用程序句柄
        LPCTSTR lpTableName ); //加速键表的ID字符串
        加载成功返回加速键表的句柄
      6.3.2 增加消息处理

  int TranslateAccelerator(
     HWND hWnd, //处理加速键的窗口句柄
   HACCEL hAccTable, //加速键表
   LPMSG lpMsg );//MSG结构的地址

    6.4 关于加速键的消息
      TranslateAccelerator的作用是将WM_KEYDOWN或者WM_SYSKEYDOWN消息,翻译成WM_COMMAND或者WM_SYSCOMMAND消息.
      当收到KEYDOWN或者SYSKEYDOWN的消息时,会根据加速键表中按键和命令ID对应关系,找到相应的命令ID,然后调用窗口处理函数,执行WM_COMMAND或者WM_SYSCOMMAND消息.
      当找到对应命令ID并执行后，TranslateAccelerator返回非零，那么就不再执行后续的处理，消息循环等候下一条消息。否则，继续让消息循环中的TansnlateMessage和DispatchMessage处理。

View Code 

// WinRes.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"

HINSTANCE g_hInst = NULL;
 
BOOL OnSetCursor( HWND hWnd, UINT nMsg, 
    WPARAM wParam, LPARAM lParam )
{    //判断是否是位于客户区之上
    int nHitTest = LOWORD( lParam );
    if( HTCLIENT != nHitTest )
    {    //不在客户区，返回FALSE，
        //让DefWindowProc处理
        return FALSE;
    }
    //获得窗口的客户区
    RECT rcClient = { 0 };
    GetClientRect( hWnd, &rcClient );
    //获得当前光标的位置
    POINT ptPos = { 0 };
    GetCursorPos( &ptPos );
    ScreenToClient( hWnd, &ptPos );
    //根据位置加载光标
    HCURSOR hCursor = NULL;
    if( ptPos.x < rcClient.right/2 )
    {
        if( ptPos.y < rcClient.bottom/2 )
        {
            hCursor = LoadCursor( NULL, IDC_SIZEALL );
        }
        else
        {
            hCursor = LoadCursor( NULL, IDC_CROSS );
        }
    }
    else
    {
        if( ptPos.y < rcClient.bottom/2 )
        {
            hCursor = LoadCursor( NULL, IDC_WAIT );
        }
        else
        {
            hCursor = LoadCursor( NULL, IDC_UPARROW );
        }
    }
    // 设置光标
    SetCursor( hCursor );
    return TRUE;
}

void OnCommand( HWND hWnd, UINT nMsg, 
    WPARAM wParam, LPARAM lParam )
{
    int nCmdID = LOWORD( wParam );
    switch( nCmdID )
    {
    case ID_EXIT:
        PostQuitMessage( 0 );
        break;
    case ID_ABOUT:
        break;
    }
}

LRESULT CALLBACK WndProc( HWND   hWnd, 
                          UINT   nMsg,
                          WPARAM wParam,
                          LPARAM lParam )
{
    switch( nMsg )
    {
    case WM_COMMAND:
        OnCommand( hWnd, nMsg, wParam, lParam );
        break;
    case WM_SETCURSOR:
        if( TRUE == OnSetCursor( hWnd, nMsg,
                wParam, lParam ) )
        {
            return 0;
        }
        break;
    case WM_DESTROY:
        PostQuitMessage( 0 );
        return 0;

    }
    return DefWindowProc( hWnd, nMsg,
        wParam, lParam );
}

BOOL RegisterWnd( LPSTR pszClassName )
{
    WNDCLASSEX wce = { 0 };
    wce.cbSize        = sizeof( wce );
    wce.cbClsExtra    = 0;
    wce.cbWndExtra    = 0;
    wce.hbrBackground = HBRUSH(COLOR_WINDOW);
    wce.hCursor       = 
        LoadCursor( g_hInst, MAKEINTRESOURCE(IDC_CURSOR1) );
    wce.hIcon         = 
        LoadIcon( g_hInst, MAKEINTRESOURCE(IDI_MAIN) );
    wce.hIconSm       = NULL;
    wce.hInstance     = g_hInst;
    wce.lpfnWndProc   = WndProc;
    wce.lpszClassName = pszClassName;
    wce.lpszMenuName  = NULL;
    wce.style         = CS_HREDRAW|CS_VREDRAW;

    ATOM nAtom = RegisterClassEx( &wce );
    if( 0 ==  nAtom )
    {
        return FALSE;
    }

    return TRUE;
}

HWND CreateWnd( LPSTR pszClassName )
{
    //加载字符串资源
    CHAR szText[260] = { 0 };
    LoadString( g_hInst, IDS_MAIN, szText, 260 );
    //加载菜单
    HMENU hMenu = LoadMenu( g_hInst, 
        MAKEINTRESOURCE(IDR_MAIN) );
    //创建窗口
    HWND hWnd = CreateWindowEx( 0,
        pszClassName, szText, 
        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, NULL, hMenu, g_hInst,
        NULL );
    return hWnd;
}

void DisplayWnd( HWND hWnd )
{
    ShowWindow( hWnd, SW_SHOW );
    UpdateWindow( hWnd );
}

void Message( HWND hWnd )
{
    //加载加速键表
    HACCEL hAccel = LoadAccelerators( 
        g_hInst, MAKEINTRESOURCE(IDR_ACCEL) );
    //消息循环
    MSG msg = { 0 };
    while( GetMessage( &msg, NULL, 0, 0 ) )
    {    // 增加加速键的消息处理
        if( !TranslateAccelerator( hWnd, hAccel, &msg ) )
        {    //字符消息处理
            TranslateMessage( &msg );
            //消息派发
            DispatchMessage( &msg );
        }
    }
}

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    g_hInst = hInstance;
    RegisterWnd( "MYWND" );
    HWND hWnd = CreateWnd( "MYWND" );
    DisplayWnd( hWnd );
    Message( hWnd );
    return 0;
}

四 程序编写

  1 定时器设置
    实现定时器的关闭和打开

代码如下，这个是新建一个win32程序，选择简单的hello word程序。和之前的有点小不一样。

View Code 

// WinCase.cpp : Defines the entry point for the application.

//



#include "stdafx.h"

#include "resource.h"


#define MAX_LOADSTRING 100


// Global Variables:

HINSTANCE hInst;                                // current instance

TCHAR szTitle[MAX_LOADSTRING];                                // The title bar text

TCHAR szWindowClass[MAX_LOADSTRING];

int   g_nX = 0;

int   g_nY = 0;                                // The title bar text


// Foward declarations of functions included in this code module:

ATOM                MyRegis
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