TCustomImageListGetWidthForPPI procedure type

In unit ImgList

Specifies an event handler used to get image widths for a display density (PPI).

Declaration

pascal

TCustomImageListGetWidthForPPI = procedure(Sender: TCustomImageList; 
 AImageWidth: Integer; 
 APPI: Integer; 
 var AResultWidth: Integer)
 of object

Arguments

`Sender`	Image list generating the event notification.
`AImageWidth`	Initial image width used in the event handler.
`APPI`	Display density (Pixels per Inch).
`AResultWidth`	Imaged width calculated in the event handler for the display density.

Description

TCustomImageListGetWidthForPPI is an object procedure which specifies an event handler used to get image widths for a specific display density (PPI). TCustomImageListGetWidthForPPI allows an application to override the value returned in the WidthForPPI property (or when calling the GetWidthForPPI method) in TCustomImageList.

Sender contains the TCustomImageList instance triggering the event notification.

AImageWidth contains the image width used as the basis for the calculation.

APPI contains the display density (Pixels per Inch) for the derived image width.

AResultWidth is a variable parameter used to store the image width derived in the event handler for the specified display density.

TCustomImageListGetWidthForPPI is the type used to implement the OnGetWidthForPPI property in TCustomImageList.

TCustomImageListGetWidthForPPI procedure type

Declaration

Arguments

Description

See also