[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Graphics' (#lcl)

TCustomIcon.MaskHandleAllocated

True if a handle has been allocated for the mask in the image.

Declaration

Source position: graphics.pp line 1671

public function TCustomIcon.MaskHandleAllocated: Boolean; override;

Function result

True when the MaskHandle has been allocated for the icon image.

Description

MaskHandleAllocated is an overridden method used to determine if a handle for the image mask has been allocated in the class instance. MaskHandleAllocated implements the abstract virtual method defined in the ancestor class.

The return value is True when Current contains a value other than -1, and the MaskHandle for the TIconImage in the shared image list has a non-zero value.

MaskHandleAllocated is called from methods that required a valid handle prior to performing actions using the mask image data. For example:

See also

TCustomIcon.Assign

  

Copies values from the specified persistent object into the current class instance.

TCustomIcon.AssignImage

  

Copies image data from the source image to the current icon image.

TCustomIcon.MaskHandleNeeded

  

Ensures that a handle for the mask in the icon is valid.

TRasterImage.BitmapHandle

  

BitmapHandle - the Handle that has been allocated for the Bitmap.

TRasterImage.Mask

  

Applies the color used for transparent pixels to the image.

TRasterImage.MaskHandle

  

The handle allocated for the Bitmap Mask.

TRasterImage.MaskHandleAllocated

  

MaskHandleAllocated - returns True if a handle has been allocated for the Mask.

Version 3.2 Generated 2024-02-25 Home