Open dialog box issue

This is a discussion on Open dialog box issue within the Windows Programming forums, part of the Platform Specific Boards category; Hi, i am using the GetOpenFileName and "OFN_FILEMUSTEXIST | OFN_NONETWORKBUTTON | OFN_PATHMUSTEXIST" flags to enable the User to select a ...

  1. #1
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    Open dialog box issue

    Hi,

    i am using the GetOpenFileName and "OFN_FILEMUSTEXIST | OFN_NONETWORKBUTTON | OFN_PATHMUSTEXIST" flags to enable the User to select a file of any type, but when i try to open a file with URL extension the dialog box hangs up( not responding ) !!

    Can you tell me please, how can i fix this issue?

    Thanks in advance.

  2. #2
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    Could you post a code snippet? It would be helpful to see how your OPEFILENAME struct is set up.

  3. #3
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    Code:
    		char szFile[512] = { "\0" };
    		OPENFILENAME ofn;
    
    		ZeroMemory( &ofn, sizeof( OPENFILENAME ) );
    
    		ofn.lStructSize		= sizeof( OPENFILENAME );
    		ofn.Flags		= OFN_FILEMUSTEXIST | OFN_NONETWORKBUTTON | OFN_PATHMUSTEXIST ;//| OFN_NODEREFERENCELINKS
    		ofn.lpstrFilter		= "*.*";
    		ofn.lpstrTitle		= _("Select a File");
    		ofn.lpstrFile		= (LPSTR)szFile;
    		ofn.nMaxFile		= sizeof( szFile );
    		ofn.lCustData		= (DWORD)NULL;
    		ofn.lpstrFileTitle	= NULL;
    		ofn.nMaxFileTitle	= NULL;
    
    		if ( GetOpenFileName( &ofn ) )
    		{
    			szSelectedFile->Append( ofn.lpstrFile );
    		}

  4. #4
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    Been a while but IIRC...

    The strings must be NULL terminated and the filter has a special format (check MSDN) and has to be double null terminated.

    If the create fails call GetLastError() and check what went wrong.
    "Man alone suffers so excruciatingly in the world that he was compelled to invent laughter."
    Friedrich Nietzsche

    "I spent a lot of my money on booze, birds and fast cars......the rest I squandered."
    George Best

    "If you are going through hell....keep going."
    Winston Churchill

  5. #5
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    Quote Originally Posted by novacain View Post
    and has to be double null terminated.
    Now it works correctly
    Thanks for help.


    But i have another problem :
    I have created a shortcut by right-clicking the Dial-up connection under "Network Connections" and then selected "Create Shortcut" from the context menu. After that i have renamed the shortcut on the Desktop to Dailup.lnk

    I can open the shortcut using the previous Dialog Box but when i try after that to launch it with ShellExecuteEx i get the following error :
    The parameter is incorrect.
    In a messagebox.

    Do you have any idea why i am getting this error?
    Code:
    	SHELLEXECUTEINFO	sei;
    	ZeroMemory( &sei, sizeof( sei ) );
    	
    	sei.cbSize		= sizeof ( SHELLEXECUTEINFO );
    	sei.lpFile		= ofn.lpstrFile;
    	sei.lpVerb		= _T("open"); 
    	sei.fMask		= SEE_MASK_NOCLOSEPROCESS | SEE_MASK_NOZONECHECKS;
    	sei.nShow		= SW_SHOWNORMAL;
    
    	CoInitializeEx( NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE ); // Incase that "COM single-threaded apartment (STA) type" is needed
    
            ShellExecuteEx( &sei );

  6. #6
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    Try setting the verb to NULL.

    As you are trying to launch a shortcut (.lnk file) the OS should then search the reg for the correct association and run the required process/application based on the target of the shortcut.
    "Man alone suffers so excruciatingly in the world that he was compelled to invent laughter."
    Friedrich Nietzsche

    "I spent a lot of my money on booze, birds and fast cars......the rest I squandered."
    George Best

    "If you are going through hell....keep going."
    Winston Churchill

  7. #7
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    Thanks, it worked flawlessly

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