DialogBoxParam problem

This is a discussion on DialogBoxParam problem within the Windows Programming forums, part of the Platform Specific Boards category; I'm trying to open a Dialog and send a parameter (ID for SQL query) with it, but I just don't ...

  1. #1
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    DialogBoxParam problem

    I'm trying to open a Dialog and send a parameter (ID for SQL query) with it, but I just don't know how to read it.

    Calling dialog:

    Code:
     
    DialogBoxParam(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_SKUPINE_PRIKAZ), hwnd, GroupsShowDlgProc, (LPARAM)tmp_i);
    Here's how i'm trying to read parameter:

    Code:
     
    BOOL CALLBACK GroupsShowDlgProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
     switch(message)
     {   
      case WM_INITDIALOG:
       MessageBox(hwnd, (const char*)HIWORD(lParam), "Test", MB_OK);
    Any ideas?
    [C++]
    IDE: DevC++ 4.9.9.2 (GCC 3.4.2)
    2nd compiler: g++ (GCC 3.4.3/4.0.0)
    3rd compiler: Borland 5.5
    [C#]
    IDE: Microsoft Visual C# Express 2005
    2nd IDE: SharpDevelop
    2nd compiler: csc in Command Prompt
    .NET Framework: 2.0
    [PHP]
    Core: 5.1.0 beta 3
    IDE: PHPEdit
    2nd IDE: Notepad
    Favourite extensions: exif,gd2,mysql
    Favourite PEAR packages: DB, XML_RSS, ID3
    Favourite databases: SQLite, MySQL

  2. #2
    Even death may die... Dante Shamest's Avatar
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    Is the HIWORD() necessary?

  3. #3
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    Without HIWORD() program crashes, but with HIWORD() returns empty string...
    [C++]
    IDE: DevC++ 4.9.9.2 (GCC 3.4.2)
    2nd compiler: g++ (GCC 3.4.3/4.0.0)
    3rd compiler: Borland 5.5
    [C#]
    IDE: Microsoft Visual C# Express 2005
    2nd IDE: SharpDevelop
    2nd compiler: csc in Command Prompt
    .NET Framework: 2.0
    [PHP]
    Core: 5.1.0 beta 3
    IDE: PHPEdit
    2nd IDE: Notepad
    Favourite extensions: exif,gd2,mysql
    Favourite PEAR packages: DB, XML_RSS, ID3
    Favourite databases: SQLite, MySQL

  4. #4
    Even death may die... Dante Shamest's Avatar
    Join Date
    Apr 2003
    Location
    Malaysia
    Posts
    970
    Is tmp_i a pointer to a c-string?

  5. #5
    Registered User
    Join Date
    Nov 2004
    Location
    Slovenia, Europe
    Posts
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    That's it

    It has to be const char* to work!

    Thanks for help!!!
    [C++]
    IDE: DevC++ 4.9.9.2 (GCC 3.4.2)
    2nd compiler: g++ (GCC 3.4.3/4.0.0)
    3rd compiler: Borland 5.5
    [C#]
    IDE: Microsoft Visual C# Express 2005
    2nd IDE: SharpDevelop
    2nd compiler: csc in Command Prompt
    .NET Framework: 2.0
    [PHP]
    Core: 5.1.0 beta 3
    IDE: PHPEdit
    2nd IDE: Notepad
    Favourite extensions: exif,gd2,mysql
    Favourite PEAR packages: DB, XML_RSS, ID3
    Favourite databases: SQLite, MySQL

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