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:
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 |
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