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通过VC中的win32 api(菜单创建)打开窗口++

visual-c++ winapi

Ravi shankar · 技术社区 · 15 年前

我正在尝试通过VC++将菜单添加到在win32 api中创建的窗口中。这个程序生成了两个我无法修复的错误。

代码如下。

泛型h

#define IDM_EXIT 100
#define IDM_TEST 200
#define IDM_ABOUT 300
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK About (HWND, UINT, WPARAM, LPARAM);

通用RC

#include "windows.h"
#include "generic.h"
#include "winver.h"
MYAPP ICON DISCARDABLE "GENERIC.ICO"
MYAPP MENU DISCARDABLE
BEGIN
POPUP "&File"
BEGIN
MENUITEM "E&xit", IDM_EXIT
END
MENUITEM "&Test!", IDM_TEST
POPUP "&Help"
BEGIN
MENUITEM "&About MyAppâ¦", IDM_ABOUT
END
END
1 VERSIONINFO
FILEVERSION 3,3,0,0
PRODUCTVERSION 3,3,0,0
FILEFLAGSMASK 0x3fl
#ifdef _DEBUG
FILEFLAGS 0xbl
#else
FILEFLAGS 0xal
#endif
FILEOS 0X4L
FILETYPE 0x1L
FILESUBTYPE 0x0L
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904B0"
BEGIN
VALUE "CompanyName", "Your Company\0"
VALUE "FileDescription", "My Application\0"
VALUE "FileVersion", "1.0\0"
VALUE "InternalName", "MyApp\0"
VALUE "LegalCopyright", "Copyright \251 Your Company.
1995\0"
VALUE "LegalTrademarks", "Microsoft\256 is a registered
trademark of Microsoft
Corporation. Windows (TM) is
a trademark of Microsoft
Corporation\0"
VALUE "OriginalFilename", "\0"
VALUE "ProductName", "MyApp\0"
VALUE "ProductVersion", "1.0\0"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 1200
END
END

通用C

#include <windows.h>
#include "generic.h"
HINSTANCE hInst; // current instance
LPCTSTR lpszAppName = "MyApp";
LPCTSTR lpszTitle = "My Application";
int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
                     LPTSTR lpCmdLine, int nCmdShow)
{
    MSG msg;
    HWND hWnd;
    WNDCLASSEX wc;
    // In Windows 95 or Windows NT the hPrevInstance will always be NULL.
    //...................................................................
    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc = (WNDPROC)WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon (hInstance, lpszAppName);
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName = lpszAppName;
    wc.lpszClassName = lpszAppName;
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.hIconSm = LoadImage(hInstance, lpszAppName,
        IMAGE_ICON, 16, 16,
        LR_DEFAULTCOLOR );
    if ( !RegisterClassEx( &wc ) )
        return( FALSE );
    hInst = hInstance;
    hWnd = CreateWindow( lpszAppName,
        lpszTitle,
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, 0,
        CW_USEDEFAULT, 0,
        NULL,
        NULL,
        hInstance,
        NULL
        );
    if ( !hWnd )
        return( FALSE );
    ShowWindow( hWnd, nCmdShow );
    UpdateWindow( hWnd );
    while( GetMessage( &msg, NULL, 0, 0) )
    {
        TranslateMessage( &msg );
        DispatchMessage( &msg );
    }
    return( msg.wParam );
}
LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM
                         lParam )
{
    switch( uMsg )
    {
    case WM_COMMAND :
        switch( LOWORD( wParam ) )
        {
        case IDM_TEST :
            break;
        case IDM_ABOUT :
            DialogBox( hInst, "AboutBox", hWnd, (DLGPROC)About
                );
            break;
        case IDM_EXIT :
            DestroyWindow( hWnd );
            break;
        }
        break;
    case WM_DESTROY :
        PostQuitMessage(0);
        break;
    default :
        return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
    }
    return( 0L );
}
LRESULT CALLBACK About( HWND hDlg,
                       UINT message,
                       WPARAM wParam,
                       LPARAM lParam)
{
    switch (message)
    {
    case WM_INITDIALOG:
        return (TRUE);
    case WM_COMMAND:
        if ( LOWORD(wParam) == IDOK
            || LOWORD(wParam) == IDCANCEL)
        {
            EndDialog(hDlg, TRUE);
            return (TRUE);
        }
        break;
    }
    return (FALSE);
}

2 回复 | 直到 12 年前

Serge 15 年前

我不知道你有哪些错误,但当我试图编译你的代码时,我只有一个关于类型转换的错误。

wc.hIconSm = LoadImage(hInstance, lpszAppName,
    IMAGE_ICON, 16, 16,
    LR_DEFAULTCOLOR );

另外,我注意到你把错误的第二个论点传给了 DialogBox 功能。它期望通过将对话框的资源标识符转换为lpctstr MAKEINTRESOURCE . 所以你应该加上这样的东西

IDD_ABOUTBOX DIALOG DISCARDABLE  34, 22, 217, 55
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "About ..."
FONT 8, "MS Sans Serif"
BEGIN
    LTEXT           "About me",1000,40,10,76,8
    DEFPUSHBUTTON   "OK",IDOK,176,6,32,14,WS_GROUP
END

进入generic.rc文件。

希望这有帮助。不过,如果你更清楚自己的问题会更好。我建议你学习一下 MSDN windows programming section 如果您要进行一些GUI编程,或者至少让Visual Studio向导为您生成一个简单的win32项目,然后再研究它。

Ruben Rivero 12 年前

Generic.c
-----------
#define IDM_EXIT           100
#define IDM_TEST           200
#define IDM_ABOUT          300
#define MYAPP1             400
#define IDD_ABOUTBOX       500
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK About   (HWND, UINT, WPARAM, LPARAM);