API之子窗口创建 (转)

子窗口的创建非常非常重要

步骤：1、新建窗口类，在窗口类中指名对应的自定义的窗口过程。窗口类类名要唯一，它     

         是各窗口类相互区别的标识。注意，类名或为静态变量，或为全局变量，因为程

         序随时都用他们。

      2、创建窗体时，指定其风格之一为WS_CHILD, 指定其父窗口句柄，得到父窗体实

         例句柄，并赋给子窗体。

      3、在主窗体的create消息中，创建0尺寸的子窗体，主窗体的size消息中，利用

        movewindow函数，重设窗体大小，重置窗体位置。

实例为CTRL002,CTRL003

实例CTRL001单击按钮显示对应文字

子窗口向父窗口发送消息

CreateWindow呼叫使用下面这些参数：

Class name（类别名称） Window text（窗口文字） Window style（窗口样式） x position（x位置） y position（y位置） Width（宽度） Height（高度） Parent window（父窗口） Child window ID（子窗口ID） Instance handle（执行实体句柄 ）Extra parameters（附加参数）

TEXT ("button") button[i].szText WS_CHILD|WS_VISIBLE|button[i].iStyle cxChar cyChar * (1 + 2 * i) 20 * xChar 7 * cyChar / 4 hwnd (HMENU)i ((LPCREATESTRUCT) lParam) -> hInstance NULL

 

 

说明：从WM_COMMAND区别出单击了哪个按钮。通过子窗口的ID号来区分。每个子窗口在创建时，就已经分配了一个唯一的ID号。ID号包含在WM_COMMAND消息中wParam的低字节位。用LOWORD()宏来获取ID。

      “用鼠标单击按钮时，子窗口控制就向其父窗口发送一个WM_COMMAND消息。...捕获WM_COMMAND消息....”

       “LOWORD(wParam)   子窗口ID

         HIWORD(wParam)    通知码

         lParam              子窗口句柄”

 

#include <windows.h>
int iFlag=1;//记录被单击按钮的ID

• //定义一个按钮类型结构体，方便创建按钮,提高代码复用率   

• struct  
• {  
•      int     iStyle ;  
•      TCHAR * szText ;  
• }  
• button[] =  
• {  
•      BS_PUSHBUTTON,      TEXT ("PUSHBUTTON"),  
•      BS_DEFPUSHBUTTON,   TEXT ("DEFPUSHBUTTON"),  
•      BS_CHECKBOX,        TEXT ("CHECKBOX"),   
•      BS_AUTOCHECKBOX,    TEXT ("AUTOCHECKBOX"),  
•      BS_RADIOBUTTON,     TEXT ("RADIOBUTTON"),  
•      BS_3STATE,          TEXT ("3STATE"),  
•      BS_AUTO3STATE,      TEXT ("AUTO3STATE"),  
•      BS_GROUPBOX,        TEXT ("GROUPBOX"),  
•      BS_AUTORADIOBUTTON, TEXT ("AUTORADIO"),  
•      BS_OWNERDRAW,       TEXT ("OWNERDRAW")  
• } ;  
• #define NUM (sizeof button / sizeof button[0])   
• LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;  
• int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,  
•                     PSTR szCmdLine, int iCmdShow)  
• {  
•      static TCHAR szAppName[] = TEXT ("BtnLook") ;  
•      HWND         hwnd ;  
•      MSG          msg ;  
•      WNDCLASS     wndclass ;  
•        
•      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 = szAppName ;  
•        
•      if (!RegisterClass (&wndclass))  
•      {  
•           MessageBox (NULL, TEXT ("This program requires Windows NT!"),  
•                       szAppName, MB_ICONERROR) ;  
•           return 0 ;  
•      }  
•        
•      hwnd = CreateWindow (szAppName, TEXT ("Button Look"),  
•                           WS_OVERLAPPEDWINDOW,  
•                           CW_USEDEFAULT, CW_USEDEFAULT,  
•                           CW_USEDEFAULT, CW_USEDEFAULT,  
•                           NULL, NULL, hInstance, NULL) ;  
•        
•      ShowWindow (hwnd, iCmdShow) ;  
•      UpdateWindow (hwnd) ;  
•        
•      while (GetMessage (&msg, NULL, 0, 0))  
•      {  
•           TranslateMessage (&msg) ;  
•           DispatchMessage (&msg) ;  
•      }  
•      return msg.wParam ;  
• }  
• LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)  
• {  
•      static HWND  hwndButton[NUM] ;//句柄是一个数值，所以可以定义成数组形式   
•      static int   cxChar, cyChar ;  
•       
•      int iLength=0;  
•      int          i ;  
•       
•        
•      HDC          hdc ;  
•      PAINTSTRUCT  ps ;  
•        
•        
•      switch (message)  
•      {  
•      case WM_CREATE :  
•           cxChar = LOWORD (GetDialogBaseUnits ()) ;  
•           cyChar = HIWORD (GetDialogBaseUnits ()) ;  
•             
• //得用 button[] ,简化创建一系列按钮过程,这就是编辑的艺术   
•           for (i = 0 ; i < NUM-1 ; i++)  
•                hwndButton[i] = CreateWindow ( TEXT("button"),   
•                                    button[i].szText,  
•                                    WS_CHILD | WS_VISIBLE | button[i].iStyle,  
•                                    cxChar, cyChar * (1 + 2 * i),  
•                                    20 * cxChar, 7 * cyChar / 4,  
•                                    hwnd, (HMENU) i,  
•                                    ((LPCREATESTRUCT) lParam)->hInstance, NULL) ;  
•                                    //((HMENU) i)，为子窗口指定唯一的ID号。按钮是子窗口的一种。该参数通常用于指定程序的菜单，因此子窗口ID必须被强制转换为HMENU   
•       
•             /* hwndButton[9] = CreateWindow ( TEXT("button"),  
•                                    button[9].szText, 
•                                    WS_CHILD | WS_VISIBLE | button[9].iStyle, 
•                                    cxChar, cyChar * (1 + 2 * 9), 
•                                    20 * cxChar, 7 * cyChar / 4, 
•                                    hwnd, (HMENU) 9, 
•                                    ((LPCREATESTRUCT) lParam)->hInstance, NULL) ; 
•              *这种按钮，会不断地触发WM_COMMAND消息，不断地调用WM_COMMAND中的InvalidateRect, 
•               使客户区不断更新，出现闪烁现象。 
•             */  
•           return 0 ;  
•      case WM_PAINT :  
•           //InvalidateRect (hwnd, &rect, TRUE) ;   
•             
•           hdc = BeginPaint (hwnd, &ps) ;  
•           //为举例方便起见，将窗口ID号数值大小顺序设定成自定义按钮结构体的顺序   
•           TextOut(hdc,300,200,button[iFlag].szText,lstrlen(button[iFlag].szText));  
•           EndPaint (hwnd, &ps) ;  
•           return 0 ;  
•      case WM_DRAWITEM :  
•      case WM_COMMAND :  
•             
•           hdc = GetDC (hwnd) ;  
•           //得到子窗口的ID号   
•           iFlag=LOWORD(wParam);//LOWORD=LOW WORD,HIWORD=HIGH WORD   
•             
•           ReleaseDC (hwnd, hdc) ;  
•           InvalidateRect (hwnd, NULL, TRUE) ;//使客户区失效，发出WM_PAINT消息,导致重绘发生   
•           return 0;  
•      case WM_DESTROY :  
•           PostQuitMessage (0) ;  
•           return 0 ;  
•      }  
•      return DefWindowProc (hwnd, message, wParam, lParam) ;  
• }  

#include <windows.h> int iFlag=1;//记录被单击按钮的ID //定义一个按钮类型结构体，方便创建按钮,提高代码复用率 struct { int iStyle ; TCHAR * szText ; } button[] = { BS_PUSHBUTTON, TEXT ("PUSHBUTTON"), BS_DEFPUSHBUTTON, TEXT ("DEFPUSHBUTTON"), BS_CHECKBOX, TEXT ("CHECKBOX"), BS_AUTOCHECKBOX, TEXT ("AUTOCHECKBOX"), BS_RADIOBUTTON, TEXT ("RADIOBUTTON"), BS_3STATE, TEXT ("3STATE"), BS_AUTO3STATE, TEXT ("AUTO3STATE"), BS_GROUPBOX, TEXT ("GROUPBOX"), BS_AUTORADIOBUTTON, TEXT ("AUTORADIO"), BS_OWNERDRAW, TEXT ("OWNERDRAW") } ; #define NUM (sizeof button / sizeof button[0]) LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ; int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { static TCHAR szAppName[] = TEXT ("BtnLook") ; HWND hwnd ; MSG msg ; WNDCLASS wndclass ; 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 = szAppName ; if (!RegisterClass (&wndclass)) { MessageBox (NULL, TEXT ("This program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow (szAppName, TEXT ("Button Look"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL) ; ShowWindow (hwnd, iCmdShow) ; UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage (&msg) ; DispatchMessage (&msg) ; } return msg.wParam ; } LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { static HWND hwndButton[NUM] ;//句柄是一个数值，所以可以定义成数组形式 static int cxChar, cyChar ; int iLength=0; int i ; HDC hdc ; PAINTSTRUCT ps ; switch (message) { case WM_CREATE : cxChar = LOWORD (GetDialogBaseUnits ()) ; cyChar = HIWORD (GetDialogBaseUnits ()) ; //得用 button[] ,简化创建一系列按钮过程,这就是编辑的艺术 for (i = 0 ; i < NUM-1 ; i++) hwndButton[i] = CreateWindow ( TEXT("button"), button[i].szText, WS_CHILD | WS_VISIBLE | button[i].iStyle, cxChar, cyChar * (1 + 2 * i), 20 * cxChar, 7 * cyChar / 4, hwnd, (HMENU) i, ((LPCREATESTRUCT) lParam)->hInstance, NULL) ; //((HMENU) i)，为子窗口指定唯一的ID号。按钮是子窗口的一种。该参数通常用于指定程序的菜单，因此子窗口ID必须被强制转换为HMENU /* hwndButton[9] = CreateWindow ( TEXT("button"), button[9].szText, WS_CHILD | WS_VISIBLE | button[9].iStyle, cxChar, cyChar * (1 + 2 * 9), 20 * cxChar, 7 * cyChar / 4, hwnd, (HMENU) 9, ((LPCREATESTRUCT) lParam)->hInstance, NULL) ; *这种按钮，会不断地触发WM_COMMAND消息，不断地调用WM_COMMAND中的InvalidateRect, 使客户区不断更新，出现闪烁现象。 */ return 0 ; case WM_PAINT : //InvalidateRect (hwnd, &rect, TRUE) ; hdc = BeginPaint (hwnd, &ps) ; //为举例方便起见，将窗口ID号数值大小顺序设定成自定义按钮结构体的顺序 TextOut(hdc,300,200,button[iFlag].szText,lstrlen(button[iFlag].szText)); EndPaint (hwnd, &ps) ; return 0 ; case WM_DRAWITEM : case WM_COMMAND : hdc = GetDC (hwnd) ; //得到子窗口的ID号 iFlag=LOWORD(wParam);//LOWORD=LOW WORD,HIWORD=HIGH WORD ReleaseDC (hwnd, hdc) ; InvalidateRect (hwnd, NULL, TRUE) ;//使客户区失效，发出WM_PAINT消息,导致重绘发生 return 0; case WM_DESTROY : PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ; }

 

 

 

实例CTRL002 利用多个静态窗体绘制棋盘

说明：1、窗体类别必需是static类，否则程序不能生成静态窗体

      2、利用GetWindowLong得到窗体实例句柄

      3、HWND是数值类型，可以定义成数组

      4、创建子窗体时，将大小设为0,以便重置

      4、利用movewidow(...)函数重置静态子窗体位置

 

#include <windows.h>
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("HelloWin") ;
     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ;
     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 = CreateSolidBrush (0) ;//将背景色设成黑色
     wndclass.lpszMenuName  = NULL ;
     wndclass.lpszClassName = szAppName ;
     if (!RegisterClass (&wndclass))
     {
          MessageBox (NULL, TEXT ("This program requires Windows NT!"),
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
     hwnd = CreateWindow (szAppName,                  // window class name
                          TEXT ("Chess"), // window caption
                          WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX
                          & ~WS_THICKFRAME & ~ WS_MINIMIZEBOX    //去除max、minbox,禁止改变窗体大小
                          ,        // window style
                          CW_USEDEFAULT,              // initial x position
                          CW_USEDEFAULT,              // initial y position
                          CW_USEDEFAULT,              // initial x size
                          CW_USEDEFAULT,              // initial y size
                          NULL,                       // parent window handle
                          NULL,                       // window menu handle
                          hInstance,                  // program instance handle
                          NULL) ;                     // creation parameters

     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;

     while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{


     static HWND hwndRect[32];

     HINSTANCE hinstance;
     int       iw,ik,im,cxClient, cyClient ;//不能将它们定义在switch中
     switch (message)
     {
     case WM_CREATE:

         hinstance=(HINSTANCE)GetWindowLong(hwnd,GWL_HINSTANCE);
         //得到程序的实例

         //窗体类别必需是static类，否则程序不能生成静态窗体。
         for(iw=0;iw<32;iw++)
         {
                 hwndRect[iw]=CreateWindow(TEXT("STATIC"),NULL,
                                           WS_CHILD|WS_VISIBLE|SS_WHITERECT, //将static 窗体背景色设成白色，好像只能设成黑/白彩色
                                           0,0,0,0,
                                           hwnd,(HMENU)iw,
                                           hinstance,
                                           NULL
                                           );
         }
          MoveWindow(hwnd,0,0,300,300,TRUE);
          return 0 ;
     case WM_SIZE:
          //MoveWindow(hwnd,0,0,400,400,TRUE);
          cxClient = LOWORD (lParam) ;//得到客户区宽度
          cyClient = HIWORD (lParam) ;//得到客户区高度

          //SetRect(&rcColor,icxClient/2,0,icxClient,icyClient);
          /*
          //归纳法
          for(ik=0;ik<4;ik++)
              //for(im=0;im<4;im++)
          MoveWindow (hwndRect[ik], (0%2+ik)*cxClient/4, 0, cxClient/8, cyClient/8, TRUE) ;
          for(ik=0;ik<4;ik++)
          MoveWindow (hwndRect[ik+4], (1%2)*cxClient/8+ik*cxClient/4, cyClient/8, cxClient/8, cyClient/8, TRUE) ;
          */
          MoveWindow(hwnd,200,100,300,300,TRUE);
          for(ik=0;ik<4;ik++)
              for(im=0;im<8;im++)
                  MoveWindow (hwndRect[ik+4*im], (im%2)*cxClient/8+ik*cxClient/4, im*cyClient/8, cxClient/8, cyClient/8, TRUE) ;
          return 0;


     case WM_DESTROY:
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}

#include <windows.h> LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ; int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { static TCHAR szAppName[] = TEXT ("HelloWin") ; HWND hwnd ; MSG msg ; WNDCLASS wndclass ; 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 = CreateSolidBrush (0) ;//将背景色设成黑色 wndclass.lpszMenuName = NULL ; wndclass.lpszClassName = szAppName ; if (!RegisterClass (&wndclass)) { MessageBox (NULL, TEXT ("This program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow (szAppName, // window class name TEXT ("Chess"), // window caption WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX & ~WS_THICKFRAME & ~ WS_MINIMIZEBOX //去除max、minbox,禁止改变窗体大小 , // window style CW_USEDEFAULT, // initial x position CW_USEDEFAULT, // initial y position CW_USEDEFAULT, // initial x size CW_USEDEFAULT, // initial y size NULL, // parent window handle NULL, // window menu handle hInstance, // program instance handle NULL) ; // creation parameters ShowWindow (hwnd, iCmdShow) ; UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage (&msg) ; DispatchMessage (&msg) ; } return msg.wParam ; } LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { static HWND hwndRect[32]; HINSTANCE hinstance; int iw,ik,im,cxClient, cyClient ;//不能将它们定义在switch中 switch (message) { case WM_CREATE: hinstance=(HINSTANCE)GetWindowLong(hwnd,GWL_HINSTANCE); //得到程序的实例 //窗体类别必需是static类，否则程序不能生成静态窗体。 for(iw=0;iw<32;iw++) { hwndRect[iw]=CreateWindow(TEXT("STATIC"),NULL, WS_CHILD|WS_VISIBLE|SS_WHITERECT, //将static 窗体背景色设成白色，好像只能设成黑/白彩色 0,0,0,0, hwnd,(HMENU)iw, hinstance, NULL ); } MoveWindow(hwnd,0,0,300,300,TRUE); return 0 ; case WM_SIZE: //MoveWindow(hwnd,0,0,400,400,TRUE); cxClient = LOWORD (lParam) ;//得到客户区宽度 cyClient = HIWORD (lParam) ;//得到客户区高度 //SetRect(&rcColor,icxClient/2,0,icxClient,icyClient); /* //归纳法 for(ik=0;ik<4;ik++) //for(im=0;im<4;im++) MoveWindow (hwndRect[ik], (0%2+ik)*cxClient/4, 0, cxClient/8, cyClient/8, TRUE) ; for(ik=0;ik<4;ik++) MoveWindow (hwndRect[ik+4], (1%2)*cxClient/8+ik*cxClient/4, cyClient/8, cxClient/8, cyClient/8, TRUE) ; */ MoveWindow(hwnd,200,100,300,300,TRUE); for(ik=0;ik<4;ik++) for(im=0;im<8;im++) MoveWindow (hwndRect[ik+4*im], (im%2)*cxClient/8+ik*cxClient/4, im*cyClient/8, cxClient/8, cyClient/8, TRUE) ; return 0; case WM_DESTROY: PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ; }

 

 

运行结果如下图

 

实例CTRL003利用多个子窗口制做简易五子棋
#include <windows.h>
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;//主窗口过程
LRESULT CALLBACK ChessWndProc (HWND, UINT, WPARAM, LPARAM) ;//棋盘cell窗口过程
TCHAR szChdChess[]=TEXT("ChessPlane");
#define iRow 15
#define iColumn 15
int iFlag=0;
int iYN[iRow][iColumn];
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("MyCHess") ;//需用类名，故声明为静态，也可声明为全局变量

     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ; //主窗口类
     WNDCLASS     chd_chessclass;//棋盘子窗口类
     WNDCLASS     chd_stateclass;//状态子窗口类，可以用wndclass类为模板，但这样写是为了明确过程，便于理解
     //主窗口类
     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 = szAppName ;
     //棋盘子窗口类
     chd_chessclass.style         = CS_HREDRAW | CS_VREDRAW ; //创建窗体是加子(WS_CHILDWINDOW)窗体风格
     chd_chessclass.lpfnWndProc   = ChessWndProc ; //修改项：换成指定的窗口过程
     chd_chessclass.cbClsExtra    = 0 ;
     chd_chessclass.cbWndExtra    = sizeof(long) ;
     chd_chessclass.hInstance     = hInstance ;
     chd_chessclass.hIcon         = NULL;//修改项：不需要图标，设为NULL
     chd_chessclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
     chd_chessclass.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH) ;//修改项：改为黑色
     chd_chessclass.lpszMenuName  = NULL ;
     chd_chessclass.lpszClassName = szChdChess ;//修改项：修改类名，窗口类之间相互区分的标识
     if (!RegisterClass (&wndclass))
     {
          MessageBox (NULL, TEXT ("This program requires Windows NT!"),
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
     RegisterClass(&chd_chessclass);//注册自定义的窗口类
     hwnd = CreateWindow (szAppName,                  // window class name
                          TEXT ("SimpleChess"), // window caption
                          WS_OVERLAPPEDWINDOW& ~WS_MAXIMIZEBOX
                          & ~WS_THICKFRAME & ~ WS_MINIMIZEBOX,        // window style
                          CW_USEDEFAULT,              // initial x position
                          CW_USEDEFAULT,              // initial y position
                          CW_USEDEFAULT,              // initial x size
                          CW_USEDEFAULT,              // initial y size
                          NULL,                       // parent window handle
                          NULL,                       // window menu handle
                          hInstance,                  // program instance handle
                          NULL) ;                     // creation parameters


     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;

     while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     //需将子窗口句柄声明为static或声明为全局变量,否则新建的窗口，在下次窗口过程调用中会丢失。
     static  HWND  hwndChess[iRow][iColumn];
     HDC         hdc ;
     PAINTSTRUCT ps ;
     RECT        rect ;
     int ixclient,iyclient,ik,iw,ixtemp,iytemp;

     switch (message)
     {
     case WM_CREATE:

          //创建chesscell窗体，加上子窗体风格，成为子窗体
         for(ik=0;ik<iRow;ik++)
             for(iw=0;iw<iColumn;iw++)
             {
         hwndChess[ik][iw]=CreateWindow (szChdChess, NULL,
                              WS_CHILDWINDOW | WS_VISIBLE,
                              0, 0, 0, 0,
                              hwnd, (HMENU)(iw+ik*iColumn),
                              (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE),
                              NULL) ;
             }
          MoveWindow(hwnd,0,0,600,600,TRUE);
          return 0 ;

     case WM_PAINT:
          hdc = BeginPaint (hwnd, &ps) ;
          EndPaint (hwnd, &ps) ;
          return 0 ;
     case WM_SIZE:
          ixclient=LOWORD(lParam);
          iyclient=HIWORD(lParam);
          ixtemp=ixclient/iRow;
          iytemp=iyclient/iColumn;
          //重设窗体大小，重置窗体位置
         for(ik=0;ik<iRow;ik++)
             for(iw=0;iw<iColumn;iw++)
             {
                 MoveWindow(hwndChess[ik][iw],ixtemp*ik,iytemp*iw,ixtemp,iytemp,TRUE);//?????????
             }

          return 0;

     case WM_DESTROY:
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}
LRESULT CALLBACK ChessWndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     HDC         hdc ;
     PAINTSTRUCT ps ;
     RECT        rect ;
     HBRUSH      hChdBrush,holdBrush;
     HBRUSH      WorBBrush[2];
     int in=0;

     switch (message)
     {
     case WM_CREATE:
          SetWindowLong(hwnd,0,0);//很有用的函数，可以传递一些信息
          return 0 ;
     case WM_LBUTTONDOWN :
          iFlag=1^iFlag;//1是黑，0是白
          //iYN[ik][iw]
          SetWindowLong(hwnd,0,1);
          InvalidateRect(hwnd,NULL,TRUE);//响应单击
          return 0;

     case WM_PAINT:
          hdc = BeginPaint (hwnd, &ps) ;
          hChdBrush=CreateSolidBrush(RGB(110,110,110));
          holdBrush=SelectObject(hdc,hChdBrush);
          GetClientRect (hwnd, &rect) ;
          //填充背景色
          FillRect(hdc,&rect,hChdBrush);

          //画网格
          MoveToEx(hdc,0,(rect.bottom-rect.top)/2,NULL);
          LineTo(hdc,rect.right,(rect.bottom-rect.top)/2);
          MoveToEx(hdc,(rect.right-rect.left)/2,0,NULL);
          LineTo(hdc,(rect.right-rect.left)/2,rect.bottom);

          //画棋子
          //创建黑、白两个画刷
          if(GetWindowLong(hwnd,0))
          {
          WorBBrush[0]=CreateSolidBrush(RGB(0,0,0));
          WorBBrush[1]=CreateSolidBrush(RGB(255,255,255));
          //画黑或白棋子
          SelectObject(hdc,WorBBrush[iFlag]);
          Ellipse(hdc,0,0,rect.bottom,rect.right);
          DeleteObject(WorBBrush[0]);
          DeleteObject(WorBBrush[1]);
          }
          SelectObject(hdc,holdBrush);
          EndPaint (hwnd, &ps) ;
          return 0 ;

     case WM_DESTROY:
          DeleteObject(hChdBrush);
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}
转自(http://blog.csdn.net/dreamcs/article/details/3888323)