TControl.FontChanged procedure

Declaration

procedure FontChanged(Sender: TObject); virtual

Description

FontChanged is a procedure used to perform actions needed when the value in the Font property has been changed for the control. FontChanged ensures that values in ParentFont and DesktopFont are set to False to reflect the font assignment.

FontChanged calls the Invalidate method to force the control to be redrawn when it is Visible. The CM_FONTCHANGED control change message is performed to reflect the change in the control state. When AutoSize contains True, the InvalidatePreferredSize and AdjustSize methods are called to update the control dimensions using the new font.

FontChanged is assigned to the OnChange event handler for the Font property in the constructor for the class instance.

See also

• Font
• ParentFont
• DesktopFont
• Invalidate
• InvalidatePreferredSize
• AdjustSize
• IsVisible
• AutoSize
• Perform