在VC++中通过Win32 API创建窗口（菜单创建）

Question

我想通过VC++将菜单添加到在win32 API中创建的窗口。这个程序会产生两个我无法修复的错误。

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

我不知道哪些错误ÿ ou've了，但我当我试图编译代码我对类型转换

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

也只有一个错误，我注意到，你传递错误的第二个参数DialogBox功能。它期望通过MAKEINTRESOURCE将对话框的资源标识符转换为LPCTSTR。所以你应该添加类似

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 

到您的generic.rc文件中。

希望这会有所帮助。虽然如果你更清楚你的问题会好得多。我建议你学习一下MSDN windows programming section，如果你打算做一些GUI编程或者至少让Visual Studio向导为你生成一个简单的win32项目，然后再研究它。

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);