Illustration of Fill Options for Annotations

(Document and Medical Imaging toolkits)

LEADTOOLS includes an alpha option that allows you to specify an alpha value from 0 (completely transparent background) to 255 (completely opaque background) inclusive.

When enabled using the L_AnnSetOptions function, you can right-click an annotation object to display the Fill dialog with the new alpha option. Here you can enter an alpha value from 0 to 255 inclusive. This figure displays the Fill dialog for the Stamp object.

The following figure displays rectangle annotation objects using different alpha values:

$image\alpha.gif$

For more information, see the documentation for L_AnnGetFillMode and L_AnnSetFillMode.

The following rectangle annotation objects illustrate the available fill modes and patterns. The foreground and background colors help to illustrate the effects.

Rectangle Properties	Rectangle Properties	Rectangle Properties	Rectangle Properties
Back row
Fill mode: Opaque	Fill mode: Opaque	Fill mode: Opaque	Fill mode: Opaque
Fill pattern: Solid	Fill pattern: Cross	Fill pattern: Backward diagonal	Fill pattern: Vertical
Fore color: Black	Fore color: Black	Fore color: Black	Fore color: Black
Back color: Yellow	Back color: Yellow	Back color: Yellow	Back color: Yellow
Front row
Fill mode: Translucent	Fill mode: Transparent	Fill mode: Opaque
Fill pattern: Forward diagonal	Fill pattern: Diagonal cross	Fill pattern: Horizontal
Fore color: Black	Fore color: Black	Fore color: Red
Back color: Green	Back color: Green	Back color: Green