Question

我正在尝试通过VC ++将菜单添加到在win32 API中创建的窗口中。该程序生成两个我无法解决的错误。

代码如下。

GENERIC.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);

GENERIC.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 MyApp…", 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

GENERIC.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);
}

Answer 1

我不知道你有哪些错误，但是当我尝试编译你的代码时，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，我注意到你向DialogBox函数传递了错误的第二个参数。它期望通过MAKEINTRESOURCE将对话框的资源标识符转换为LPCTSTR。所以你应该添加这样的东西

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

进入你的generic.rc文件。

希望这会有所帮助。虽然如果你更清楚你的问题会好得多。如果你要做一些GUI编程，或者至少让Visual Studio向导为你生成一个简单的win32项目而不是研究它，我建议你研究一下MSDN windows programming section。

Answer 2

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);

窗口通过VC ++中的Win32 API（菜单创建）

2 个答案: