wxDev-C++ - HtmlHelp未聲明

Question

在我的C程序的菜單中我有一個幫助部分。

當按下時，它應該打開一個幫助文件。

我用Helpinator Professional來製作一個簡單的幫助文件。

現在，史前史：

我通過包括<winuser.h>使用的WinHelp（）方法嘗試。它打開文件，但它給了我一個錯誤，說該文件不是Windows幫助文件或損壞。然後我讀了WinHelp（）已經過時了，我應該使用HtmlHelp（）來代替<htmlhelp.h>。我通過編寫它的完整路徑來包含它，因爲編譯器設置中的wxDev-C++目錄通常不包含在內，我不完全知道它是如何檢查目錄的。

我包含在我的resources.h文件中。 代碼在switch語句：

case ID_Help: 
HtmlHelp(hwnd, "file location", HH_DISPLAY_TOPIC, 0); 
break; 

這給我一個錯誤，說這是未申報。然後，我宣佈HWMD help; switch語句之前，改變代碼：

case ID_Help: 
help = HtmlHelp(hwnd, "file location", HH_DISPLAY_TOPIC, 0); 
break; 

它仍然告訴我，這是未申報。

我該怎麼辦？我卡住了。我在路上也遇到了其他問題，其中一些是上面提到的，但現在從未想到過。

的源代碼：

#include "resources.h" 


/* Declare Windows procedure */ 
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); 

/* Make the class name into a global variable */ 
char window_class[] = "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 = window_class; 
    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_HAND); 
    wincl.lpszMenuName = MAKEINTRESOURCE (ID_Menu);     /* 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 + 2); 

    /* 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 */ 
      window_class,   /* Classname */ 
      "Slacker Tracker v0.1",  /* Title Text */ 
      WS_OVERLAPPEDWINDOW, /* default window */ 
      CW_USEDEFAULT,  /* Windows decides the position */ 
      CW_USEDEFAULT,  /* where the window ends up on the screen */ 
      600,     /* The programs width */ 
      600,     /* 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 */ 
      ); 

    MessageBox(NULL, "Message box #1 at your service.", "MESSAGE BOX #1", 0); 

    /* 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) 
{ 
    LPCTSTR name = "D:\\winapi\\1\\help.chm"; 
    HANDLE file; 
    int size; 
    char buffer[100]; 
    wchar_t error[256]; 
    HWND help; 
    switch (message)     /* handle the messages */ 
    { 
     case WM_COMMAND: 
       switch(LOWORD(wParam)) 
        { 
         case ID_File_Exit: 
          PostMessage(hwnd, WM_CLOSE, 0, 0); 
          break; 
         case ID_NewMsgBox: 
          MessageBox(NULL, "Message box #3 at your service", "MESSAGE BOX #3", 0); 
          break; 
         case ID_Help: 
          //WinHelp(hwnd, "D:\\winapi\\1\\help.chm", HELP_INDEX, 0); 
          help = HtmlHelp(hwnd, "D:\\winapi\\1\\help.chm", HH_DISPLAY_TOPIC, 0); 
          break; 
         case ID_FSize: 
          file = CreateFile(name, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL); 
          if (file == INVALID_HANDLE_VALUE){ 
           FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 
               MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), error, 255, NULL); 
           MessageBoxW(NULL, error, (LPCWSTR)L"file", 0); 
          } 
          else{ 
           size = GetFileSize(file, NULL); 
           itoa(size, buffer, 10); 
           MessageBox(NULL, buffer, "File Size", MB_OK); 
          } 
          CloseHandle(file); 
          break; 
        } 
        break; 
     case WM_LBUTTONDOWN: 
      MessageBox(hwnd, "Message box #2 at your service", "MESSAGE BOX #2", 0); 
      break; 
     case WM_DESTROY: 
      PostQuitMessage (0);  /* send a WM_QUIT to the message queue */ 
      break; 
     default:      /* for messages that we don't deal with */ 
      return DefWindowProc (hwnd, message, wParam, lParam); 
    } 

    return 0; 
} 

編譯日誌：

main.c: In function 'WindowProcedure': 
main.c:99:36: error: 'HtmlHelp' undeclared (first use in this function) 
main.c:99:36: note: each undeclared identifier is reported only once for each function it appears in 

Answer 1

你應該這一行添加到您的.cpp文件。

#include "htmlhelp.h" 

然後您需要指定事件來呼叫幫助。 （這是我認爲這是說，它是未定義）

void CTestHelpDlg::OnHelp() 
{ 
    HtmlHelp(this->m_hWnd, "HelpSample.chm", HH_DISPLAY_TOPIC, NULL); 
} 

更多文檔和我用於學習本教程是在這裏

http://www.codeguru.com/cpp/w-p/help/html/article.php/c6503/Starting-Out-with-HtmlHelp.htm