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...reduce a form by right-clicking on the titlebar?
Autor: Thomas Stutz
[ Print tip ]  

Tip Rating (6):  
     


type
  
TForm1 = class(TForm)
  private
    
{ Private-Deklarationen }
    
FOldHeight: Integer;
    procedure WMNCRButtonDown(var Msg: TWMNCRButtonDown); message WM_NCRBUTTONDOWN;
  public
    
{ Public-Deklarationen }
  
end;

var
  
Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.WMNCRButtonDown(var Msg: TWMNCRButtonDown);
begin
  if 
(Msg.HitTest = HTCAPTION) then
    if 
(ClientHeight = 0) then
    begin
      
ClientHeight := FOldHeight;
      Application.ProcessMessages;
    end
    else
    begin
      
FOldHeight   := ClientHeight;
      ClientHeight := 0;
      Application.ProcessMessages;
    end
end
;


 

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