IsSigned property (Main Control)

C++ Builder example

Delphi example

 

Builder Syntax

bool IsSigned

Delphi Syntax

IsSigned: Boolean

Overview

Refer to Examining and Altering Bitmaps

Remarks

Indicates whether the bitmap currently loaded in the control contains signed data. This property is valid only if the control contains a bitmap. Possible values are:

Value

Meaning

TRUE

The bitmap data is signed.

FALSE

The bitmap data is not signed.

If this property is TRUE, the signed bitmap data should be converted to unsigned using the ConvertSignedToUnsigned method. If the bitmap data is signed, image processing and the paint functions may not work correctly. Currently, only TIF files contain signed data. A bitmap with signed data will not be loaded unless the LoadSigned property is set to TRUE before loading the image.

If this property is FALSE, no further processing is needed.

Support for 12 and 16-bit gray-scale images is only available in the Document/Medical toolkits.

See Also

Elements:

LoadFast property, LoadSigned property, ConvertSignedToUnsigned method

Topics:

Raster Images: Doing Color Expansion or Reduction

 

Raster Images: Getting and Setting File Information