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a procedure in a component calls a main-menu-item on the main form

Posted on 2007-04-05
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Last Modified: 2010-04-05
Dear experts,

Sorry, to bother you again.

I have put this procedure in my component:

1.  procedure TMyDrawingPanel.CursorFlashTimer_OnTImer(sender: TObject);
2.  begin
3.  CursorFlashTimer.Enabled := False;
4.   try
5.  CursorVisible := not CursorVisible;
6.  finally
7. //   if (not CursorVisible) or (miFlashCursor.Checked) then CursorFlashTimer.Enabled := True;
8.   end;
9. end;

I get an error at line 7.

Because line 7 referse to a main-menu-item called miFlashCursor on the main form.

Is there a way to do this, that a procedure in a component calls a main-menu-item
that is on the main form.

Peter
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Question by:peterkiers
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5 Comments
 
LVL 26

Expert Comment

by:EddieShipman
ID: 18859513
You will not always be able to be sure that that menu item even exists or even
named the same. The only thinkg you can do is to have the component store the
menu item that is being used to do this in another property and use that to "point"
to it.
0
 
LVL 1

Author Comment

by:peterkiers
ID: 18859617
Yes the menu-item will always exist and always named the same.

Because I use my component only in my application
0
 
LVL 26

Expert Comment

by:EddieShipman
ID: 18860225
If that is the case then you need to typecast the control's PARENT and then
access the menu item from there:

    if (not CursorVisible) or (TMyForm(Self.Parent).miFlashCursor.Checked) then
      CursorFlashTimer.Enabled := True;

Change TMyForm to the formthat your control is on.
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LVL 26

Accepted Solution

by:
EddieShipman earned 500 total points
ID: 18860228
Or just typecast it to TForm, that should work as well.
0
 
LVL 1

Author Comment

by:peterkiers
ID: 18860860
Your the best, thank you.

Peter Kiers
0

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