Vcl.Controls.TWinControl.OnAlignPosition
Delphi
property OnAlignPosition: TAlignPositionEvent read FOnAlignPosition write FOnAlignPosition;
C++
__property TAlignPositionEvent OnAlignPosition = {read=FOnAlignPosition, write=FOnAlignPosition};
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
event | protected | Vcl.Controls.pas Vcl.Controls.hpp |
Vcl.Controls | TWinControl |
Description
Occurs when an object with custom alignment is aligned.
OnAlignPosition occurs when child controls with an Align property of alCustom are aligned.
CustomAlignPosition triggers the OnAlignPosition event. If this event is defined, CustomAlignPosition uses the alignment parameters it obtains from OnAlignPosition. Defining this event allows users to set the alignment parameters without overriding CustomAlignPosition. It holds a TAlignPositionEvent type.
These are the parameters:
Parameter | Meaning |
---|---|
NewLeft | NewTop | NewWidth | NewHeight |
Location and size of child control, as determined by container's size and the Anchors TControl_Anchors constraints for the control. OnAlignPosition can modify these values to reposition the control. |
AlignRect |
The client area in which the control is aligned. OnAlignPosition can modify this value. |
AlignInfo |
Alignment information in a TAlignInfo. |
As implemented in TWinControl, OnAlignPosition does nothing. |