我的WIN32 API對話框dosent show - C++

Question

您好，我正在嘗試學習如何使用WIN32 API創建Windows應用程序。爲此，我正在通過關於這個主題的Forgers教程。我被困在嘗試讓我的第一個對話框顯示時，我的菜單項被點擊。我已經檢查了MSDN網站，並查看了我的代碼中的所有相關功能的文檔，並且所有內容都正確地顯示給我。但是，當然，我不知道，因爲我只是在學習，我想知道是否有人可以指出我的錯誤，或者可能指向我可能在文檔中缺少的方向。我敢肯定，這真的很愚蠢（因爲它總是與這些東西） 無論如何這裏是我的小腳本。希望你們中的任何人都能幫忙。感謝

#include <windows.h> 
#include "resource.h" 
/* Declare Windows procedure */ 
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); 
BOOL CALLBACK AboutDlgProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); 
/* Make the class name into a global variable */ 
char szClassName[ ] = "WindowsApp"; 

int WINAPI WinMain (HINSTANCE hThisInstance, 
       HINSTANCE hPrevInstance, 
       LPSTR lpszArgument, 
       int nFunsterStil) 

{ 
HWND hwnd;    /* This is the handle for our window */ 
MSG messages;   /* Here messages to the application are saved */ 
WNDCLASSEX wincl;  /* Data structure for the windowclass */ 

/* The Window structure */ 
wincl.hInstance = hThisInstance; 
wincl.lpszClassName = szClassName; 
wincl.lpfnWndProc = WindowProcedure;  /* This function is called by windows */ 
wincl.style = CS_DBLCLKS;     /* Catch double-clicks */ 
wincl.cbSize = sizeof (WNDCLASSEX); 

/* Use default icon and mouse-pointer */ 
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION); 
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION); 
wincl.hCursor = LoadCursor (NULL, IDC_ARROW); 
wincl.lpszMenuName = NULL;     /* No menu */ 
wincl.cbClsExtra = 0;      /* No extra bytes after the window class */ 
wincl.cbWndExtra = 0;      /* structure or the window instance */ 
/* Use Windows's default color as the background of the window */ 
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND; 

/* Register the window class, and if it fails quit the program */ 
if (!RegisterClassEx (&wincl)) 
    return 0; 

/* The class is registered, let's create the program*/ 
hwnd = CreateWindowEx (
     0,     /* Extended possibilites for variation */ 
     szClassName,   /* Classname */ 
     "Windows App",  /* Title Text */ 
     WS_OVERLAPPEDWINDOW, /* default window */ 
     CW_USEDEFAULT,  /* Windows decides the position */ 
     CW_USEDEFAULT,  /* where the window ends up on the screen */ 
     544,     /* The programs width */ 
     375,     /* and height in pixels */ 
     HWND_DESKTOP,  /* The window is a child-window to desktop */ 
     NULL,    /* No menu */ 
     hThisInstance,  /* Program Instance handler */ 
     NULL     /* No Window Creation data */ 
     ); 

/* Make the window visible on the screen */ 
ShowWindow (hwnd, nFunsterStil); 

/* Run the message loop. It will run until GetMessage() returns 0 */ 
while (GetMessage (&messages, NULL, 0, 0)) 
{ 
    /* Translate virtual-key messages into character messages */ 
    TranslateMessage(&messages); 
    /* Send message to WindowProcedure */ 
    DispatchMessage(&messages); 
} 

/* The program return-value is 0 - The value that PostQuitMessage() gave */ 
return messages.wParam; 
} 
/* This function is called by the Windows function DispatchMessage() */ 

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) 
{ 
switch (message)     /* handle the messages */ 
{ 
    case WM_CREATE: 
     { 
      HMENU hMenu, hSubMenu, hOtherMenu, hOtherSubMenu; 

      hMenu = CreateMenu(); 
      hSubMenu = CreatePopupMenu(); 
      hOtherMenu = CreateMenu(); 
      hOtherSubMenu = CreatePopupMenu(); 
      AppendMenu(hSubMenu, MF_STRING, ID_FILE_EXIT, "E&xit"); 
      AppendMenu(hMenu, MF_STRING | MF_POPUP, (UINT)hSubMenu, "&File"); 
      AppendMenu(hSubMenu, MF_STRING, ID_STUFF, "S&tuff"); 


      AppendMenu(hOtherSubMenu, MF_STRING,ID_OTHER_SUB, "O&ther"); 
      AppendMenu(hMenu, MF_STRING | MF_POPUP, (UINT)hOtherSubMenu, "&Other"); 


      SetMenu(hwnd, hMenu); 
      //SetMenu(hwnd, hOtherMenu); 

      } 
      break; 

    case WM_LBUTTONDOWN: 
     MessageBox(hwnd, "this is my program", "program box", 0); 
     break; 
    case WM_CLOSE: 
     DestroyWindow(hwnd); 
     break; 
    case WM_DESTROY: 
     PostQuitMessage (0);  /* send a WM_QUIT to the message queue */ 
     break; 
      case WM_COMMAND: 
     switch(LOWORD(wParam)) 
     { 
      case ID_STUFF: 
       DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_ABOUT), hwnd, AboutDlgProc); 
       break; 

      case ID_FILE_EXIT: 
        PostQuitMessage(0); 
        break; 
     } 
    default:      /* for messages that we don't deal with */ 
     return DefWindowProc (hwnd, message, wParam, lParam); 
} 
return 0; 
} 
BOOL CALLBACK AboutDlgProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){ 
switch(message) 
{ 
    case WM_INITDIALOG: 
       return TRUE; 
    case WM_COMMAND: 
       switch(LOWORD(wParam)) 
       { 
        case IDOK: 
        EndDialog(hwnd, IDOK); 
break; 
case IDCANCEL: 
EndDialog(hwnd, IDCANCEL); 
break; 
}  
break; 
default: 
return FALSE; 
} 
return TRUE; 
} 

這是.RC

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

    IDR_MYMENU MENU 
    BEGIN 
    POPUP "F&ile" 
    BEGIN 
     MENUITEM "E&xit", ID_FILE_EXIT 
     MENUITEM "stuff I like", ID_STUFF 
    END 
END  


IDD_ABOUT DIALOG DISCARDABLE 0,0,239,66 
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU 
CAPTION "About Box" 
FONT 8, "MS Sans Serif" 
BEGIN 
    DEFPUSHBUTTON "&ok", IDOK, 174,18,50,14 
    PUSHBUTTON "&Cancel", IDCANCEL, 174,18,50,14 
    GROUPBOX "About this program...",IDC_STATIC,7,7,225,52 
    CTEXT "This is a Modular Database program", IDC_STATIC, 16,18,144,33 
END 

，這是用於.RC

#define IDR_MYMENU 101 

#define ID_FILE_EXIT 4001 
#define ID_STUFF 4002 

#define IDC_STATIC -1 
#define IDD_ABOUT 102 
#define ID_OTHER_SUB 4003 

P.S.頭我是任何論壇的第一次海報，所以我很抱歉，如果我沒有明確地獲得代碼，請讓我知道再次感謝！

Answer 1

我想你沒有把resource.h和recource.rc加到你的項目中。

如果您不添加它們，您的項目將編譯，但不會顯示對話框。

我編譯你的代碼，它工作正常。

我使用mingw4.7和devC++ IDE。