(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.
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 |