Unit 'Controls' Package
[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] [#lcl]

TControl.ChangeScale

Applies scaling (multiplier and divider) to the bounds coordinates, constraints, and Font in a control.

Declaration

Source position: controls.pp line 1324

protected procedure TControl.ChangeScale(

  Multiplier: Integer;

  Divider: Integer

); virtual;

Arguments

Multiplier

  

Multiplicand used to calculate the scaled numeric values.

Divider

  

Divisor used to calculate the scaled numeric values.

Description

ChangeScale is a method used to apply scaling, expressed by the Multiplier and Divider arguments, to size values in the control. These values include:

ChangeScale calls the MulDiv routine in the LCLType unit to calculate the scaled numeric values. The results from the calculations are rounded and returned as an Integer type.

No actions are performed in the method when Multiplier and Divider have the same value.

ChangeScale can be overridden in descendent classes to perform any additional action needed for the class type.

ChangeScale is called from the ScaleControls and ScaleBy methods in the TWinControl descendant.

See also

TControl.BaseBounds

  

The rectangle with the designed bounds for the control.

TControl.BoundsRect

  

The Top, Left and Bottom, Right for the control, in client coordinates.

TControl.Font

  

The font to be used for text display in this control.

TControl.ParentFont

  

If True, the Font of the control will be the same as the one from the Parent. Default is True.

TControl.ScaleConstraints

  

Scales the minimum and maximum Width and Height.

TWinControl.ScaleBy

  

Scales (resizes) the control and all of its child controls.

TWinControl.ScaleControls

  

Scales values for all child controls.

MulDiv

  



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