Mega Code Archive
The best way to emulate the Size tool at run time
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Title: The best way to emulate the "Size" tool at run-time
Question: One of my last articles was a unit of routines givin the ability to resize the controls at run-time like using the "Size" tool in the Delphi IDE at design time.
This simple routine is best, it can differentiate width and height and is only one for all actions.
Answer:
Type
TSizeType = ( stNoChange, stSmallest, stLargest, stConstant );
Procedure SizeCtrls( Ctrls : Array Of TControl; HeightType : TSizeType = stNoChange; WidthType : TSizeType = stNoChange; HeightConst : Integer = -1; WidthConst : Integer = -1 );
Var
IdX : Integer;
Cnt : Integer;
Begin
// Only one or no controls given.
If ( Low( Ctrls ) = High( Ctrls ) ) Then Exit;
// Costant width and height.
If ( HeightConst = -1 ) Then HeightConst := TControl( Low( Ctrls ) ).Height;
If ( WidthConst = -1 ) Then WidthConst := TControl( Low( Ctrls ) ).Width;
// Height size.
If ( Not( HeightType = stNoChange ) ) Then Begin
// Finds the height to use.
Cnt := TControl( Ctrls[ Low( Ctrls ) ] ).Height;
Case ( HeightType ) Of
stSmallest :
For IdX := Low( Ctrls ) To High( Ctrls ) Do
If ( TControl( Ctrls[ IdX ] ).Height Cnt := TControl( Ctrls[ IdX ] ).Height;
stLargest :
For IdX := Low( Ctrls ) To High( Ctrls ) Do
If ( TControl( Ctrls[ IdX ] ).Height Cnt ) Then
Cnt := TControl( Ctrls[ IdX ] ).Height;
stConstant : Cnt := HeightConst;
End;
// Applyes changes.
For IdX := Low( Ctrls ) To High( Ctrls ) Do
TControl( Ctrls[ IdX ] ).Height := Cnt;
End;
// Width size.
If ( Not( WidthType = stNoChange ) ) Then Begin
// Finds the width to use.
Cnt := TControl( Ctrls[ Low( Ctrls ) ] ).Width;
Case ( WidthType ) Of
stSmallest :
For IdX := Low( Ctrls ) To High( Ctrls ) Do
If ( TControl( Ctrls[ IdX ] ).Width Cnt := TControl( Ctrls[ IdX ] ).Width;
stLargest :
For IdX := Low( Ctrls ) To High( Ctrls ) Do
If ( TControl( Ctrls[ IdX ] ).Width Cnt ) Then
Cnt := TControl( Ctrls[ IdX ] ).Width;
stConstant : Cnt := WidthConst;
End;
// Applyes changes.
For IdX := Low( Ctrls ) To High( Ctrls ) Do
TControl( Ctrls[ IdX ] ).Width := Cnt;
End;
End;
Use that like this:
SizeCtrls( [ Button1, Button2, Button3 ], stLargest, stConstant, -1, 150 );
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