Bitmap (PRIM_BMP)

Bitmap is an image file in the repository

Ancestors - Graphic (PRIM_FLBX)Object (PRIM_OBJT)

Details

A Bitmap component can be used to store images files in the LANSA repository.
 
Originally limited to just BMP files, Bitmaps can also store JPG, JPEG and PNG files.
 
Once enrolled, these images can be used on buttons, list items and many other places in an application.
 
Enrolled images are easy to deploy as part of the application and are compiled in to the DLL generated for desktop components.
 
PRIM_BMP is an abstract class. The Sys_Appln.CreateBitmap  method can be used to create an instance at runtime.

Example

In this example an image stored in a BLOB field is used to populate the image.

#Image.FileName := #Empimg

In this example a bitmap instance is created from a file.

Define_Com Class(#Prim_bmp) Name(#Bitmap) Reference(*Dynamic)
 
#Bitmap <= #Sys_Appln.CreateBitmap(#FilePath)

Properties

Name	Description
BitsPerPixel	Number of bits per pixel
ComponentClassName	ComponentClassName is the name of the component's class. Inherited from Object (PRIM_OBJT)
ComponentMembers	ComponentMembers provides access to all the member components of this component Inherited from Object (PRIM_OBJT)
ComponentPatternName	ComponentPatternName is used to qualify the class of the component. Inherited from Object (PRIM_OBJT)
ComponentTag	Generic space allowing a value to be stored for the instance Inherited from Object (PRIM_OBJT)
ComponentType	ComponentType gives you access to the type information about the component Inherited from Object (PRIM_OBJT)
ComponentTypeName	ComponentTypeName is the fully qualified name of the component's class. Inherited from Object (PRIM_OBJT)
CompressionType	Image Compression Type
FileName	FileName is used to specify an image file
Height	Height of the image in pixels
ImageCount	Number of images
ImageType	Image Format
IsLoaded	True when the bitmap source file has been loaded
MaskColor	Color used to identify the background of the image
Name	Name identifies the component Inherited from Object (PRIM_OBJT)
Owner	Owner owns this component Inherited from Object (PRIM_OBJT)
Parent	The component instance to which this instance is attached. The visual container for a control or the collector of a set of child instances Inherited from Object (PRIM_OBJT)
StandardImage	Use on of the standard application images
UseMaskColor	Use the mask color as the background
Width	Width of the image in pixels

Events

Name	Description
CreateInstance	CreateInstance is signalled when an instance of a component is created Inherited from Bitmap (PRIM_BMP)
DestroyInstance	DestroyInstance is signalled when an instance of a component is about to be destroyed Inherited from Bitmap (PRIM_BMP)
Failed	Fired if the image fails to load for any reason
Loaded	Fired when the bitmap source has been loaded

See also

All Component Classes

Technical Reference

LANSA Version 15, April 2020