我的第一个WIN32 Platform SDK 程序

    第一次写SDK的WIN32程序，照着MSDN写了半天，还好没碰到什么问题，挺顺利的就完成了，只是想不到MSDN的例子里面有的 ghInstance 全局变量是 HANDLE 类型的，结果在 DialogBox() 中就出现了类型转换出错，后来把类型改成 HINSTANCE 就没事了。

 

/**//***************************
generic.cpp
***************************/

#include <windows.h>
#include "generic.h"

LRESULT WINAPI MainWndProc( HWND, UINT, WPARAM, LPARAM );
LRESULT WINAPI AboutDlgProc( HWND, UINT, WPARAM, LPARAM );

HINSTANCE ghInstance;

int PASCAL WinMain( HINSTANCE hInstance,
                    HINSTANCE hPrevInstance,
                    LPSTR lpszCmdLine,
                    int nCmdShow )
...{
    WNDCLASS wc;
    HWND hWnd;
    
    //单态判断
    if( !hPrevInstance )
    ...{
        wc.lpszClassName = "GenericAppClass";
        wc.lpfnWndProc = MainWndProc;
        wc.style = CS_OWNDC | CS_VREDRAW | CS_HREDRAW;
        wc.hInstance = hInstance;
        wc.hIcon = LoadIcon( NULL, IDI_APPLICATION );
        wc.hCursor = LoadCursor( NULL, IDC_ARROW );
        wc.hbrBackground = (HBRUSH)( COLOR_WINDOW+1 );
        wc.lpszMenuName = "GenericAppMenu";
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        
        RegisterClass( &wc );
    }
    
    //获取该注册窗口的句柄
    ghInstance = hInstance;

    //创建窗口
    hWnd = CreateWindow( "GenericAppClass",
                        "Generic Application",
                        WS_OVERLAPPEDWINDOW|WS_HSCROLL|WS_VSCROLL,
                        0,
                        0,
                        CW_USEDEFAULT,
                        CW_USEDEFAULT,
                        NULL,
                        NULL,
                        hInstance,
                        NULL);
    
    //显示窗口
    ShowWindow( hWnd, nCmdShow );
    UpdateWindow( hWnd );
    
    MSG msg;
    BOOL bRet;
    //创建信息循环
    while( bRet = GetMessage( &msg, hWnd, 0, 0 ) ) 
    ...{
        //判断是否获取消息返回出错状态
        if( bRet == -1 ) 
        ...{
            return -1;
        }
        else
        ...{
            TranslateMessage( &msg );
            DispatchMessage( &msg );
        }
    }

    return msg.wParam;

}

LRESULT CALLBACK MainWndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam )
...{
    PAINTSTRUCT ps;
    HDC hDC;
    
    switch( msg ) 
    ...{
        
       case WM_PAINT:
           hDC = BeginPaint( hWnd, &ps );
           
           TextOut( hDC, 10, 10, "Hello, World!", 13 );
           
           EndPaint( hWnd, &ps );
           break;
       case WM_COMMAND:
           switch( wParam ) 
           ...{
               case IDM_ABOUT:
                   DialogBox(ghInstance, "AboutDlg", hWnd, (DLGPROC)AboutDlgProc);
                   //MessageBox( hWnd, "菜单激活", "Message",0);
                   break;
           }
           break;
           
       case WM_DESTROY:
           PostQuitMessage( 0 );
           break;
       default:
           return( DefWindowProc( hWnd, msg, wParam, lParam ));
    }
    
    return 0;
    
}

LRESULT CALLBACK AboutDlgProc( HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam )
...{
    switch( uMsg ) 
    ...{
        case WM_INITDIALOG:
            return TRUE;
        case WM_COMMAND:
            switch( wParam ) 
            ...{
                case IDOK:
                    EndDialog( hDlg, TRUE );
                    return TRUE;
            }
            break;
        default:
            return FALSE;    
    }

    return FALSE;
}

 

 

/**//***************************
generic.h
***************************/

#define IDM_ABOUT      1000

 

 

/**//***************************
generic.dlg
***************************/

1 DLGINCLUDE "generic.h"

AboutDlg DIALOG FIXED 6, 21, 198, 99
STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU
CAPTION "About Generic"
FONT 8, "MS Shell Dlg"
BEGIN
    DEFPUSHBUTTON   "&OK", IDOK, 72, 74, 40, 14
    LTEXT           "Generic Application", 104, 45, 14,
                    128, 8
    LTEXT           "Written as a sample", 105, 45, 35, 59, 8
    LTEXT           "Microsoft Corporation", 106, 45, 45, 98, 8
    LTEXT           "Copyright (c) 1996", 107, 45,
                    54, 138, 8
END