I want to use the Windows API function MessageBox. It's already prototyped in SYSPROCS*DLL_USER:

<code>

SHORT PASCAL MessageBox(SHORT,LPCHAR,LPCHAR,SHORT)

</code>

But my C++ Reference doesn't agree:

<code>

int MessageBox( LPCTSTR lpszText, LPCTSTR lpszCaption=NULL, UINT nType=MB_OK );

</code>

There seems to be an extra first integer parameter in the prototyped version. What is the explanation? And perhaps somebody has got a working example? TIA.

- Oystein -

Sorry - looked in the wrong documentation. Here's the correct MessageBox:

<code>
int MessageBox(
  HWND hWnd,          // handle to owner window
  LPCTSTR lpText,     // pointer to text in message box
  LPCTSTR lpCaption,  // pointer to title of message box
  UINT uType          // style of message box
);

</code>

So the prototype must be right after all.

- Oystein -

I still need some help with the Windows API MessageBox function, so I'd be very grateful for a nudge in the right direction. I've no problem with running it from a window, but as you might have guessed I want it to work from the System Editor.

I quote from the online Reference article on the Msg function:

"To display a message without being in event context (for example, if code is executed from the system editor) use the Windows API function MessageBox. This requires SYSTEM MODAL to be set and all string parameters to be terminated with char(0)."

My questions is: Why do I still get the message "The stored procedure can be executed in event-context only"?

And if that can be circumvented - what should I use for the handle parameter? And which modality? 1? (=application modality)

- Oystein -

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