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Previous versions of LEADTOOLS supported annotations with translucent backgrounds. An alpha option allows you to specify an alpha value from 0 (completely transparent background) to 255 (completely opaque background) inclusive.
When enabled using the LAnnotation::SetOptions 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 © 255 inclusive. This figure displays the Fill dialog for the Stamp object.
The following figure displays rectangle annotation objects using different alpha values:
For more information, see the documentation for LAnnotation::GetFillMode and LAnnotation::SetFillMode.
The following rectangle annotation objects illustrate the available fill modes and patterns. The foreground and background colors help to illustrate the effects.
Back row:
Fill mode: Opaque |
Fill mode: Opaque |
Fill mode: Opaque |
Fill mode: Opaque |
Front row:
Fill mode: Translucent |
Fill mode: Transparent |
Fill mode: Opaque |