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How does one use the DestroyComponents method

Posted on 2008-11-12
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Last Modified: 2013-11-23
I dynamically create a whole lot of TPanels on a parent panel called for example PlanPnl.  When I want to draw a new set of panels on the same parent panel, I call PlanPnl.DestroyComponents to first remove the previous set of panels from the parent.  However after calling PlanPnl.DestroyComponents, the children panels remain on the parent panel.  What must I do to clear the parent panel?
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Question by:HenryM2
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Geert Gruwez earned 1000 total points
ID: 22947658
DestroyComponents destroys all owned components, not the contained ones
The components on the Panel are owned by the form, and the parent is the panel

use below function as:

procedure TForm.ShowPlanPnl;
begin
  DestroyChildren(PlanPnl);
  // Add components here
end;
procedure DestroyChildren(AWinControl: TWinControl);
var I: Integer;
  aChild: TControl;
begin
  for I := AWinControl.ControlCount-1 to 0 do
  begin
    aChild := AWinControl.Controls[I];
    FreeAndNil(aChild);
  end;
end;

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LVL 38

Assisted Solution

by:Geert Gruwez
Geert Gruwez earned 1000 total points
ID: 22948276
woops:

for I := AWinControl.ControlCount-1 downto 0 do
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Author Closing Comment

by:HenryM2
ID: 31516119
Sorry for only getting back now, I was away. Solution works perfectly, thanks.
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