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Available in the LEADTOOLS Imaging toolkit. |
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Available in the LEADTOOLS Imaging toolkit. |
Bitmaps and Bitmap Lists
To support multipage files and animation, the LEAD control can reference a list of bitmaps. In fact, even a control with only one bitmap has a list, and the list contains only the one bitmap.
The following properties reference the control's entire list of bitmaps:
The following methods lets you update a bitmap list:
You can copy an entire list by assigning the BitmapList property from one control to another. You can free all of the bitmaps in the list by setting the property to 0. You can also reference the entire list of bitmaps when you load and save multipage files and when you play the list as an animation.
Most methods and properties reference only one bitmap (the current bitmap). When there is a list of bitmaps, the following property lets you specify the current bitmap:
The following property references the control's current bitmap:
You can copy one control's current bitmap to another control's current bitmap by assigning the Bitmap property from one control to the other. You can remove the current bitmap from the list (freeing the bitmap) by setting the Bitmap property to 0. When a control has only one bitmap, you do not have to set the BitmapListIndex property to specify the current bitmap.
When assigning a bitmap of one control to a bitmap of another control, RefBitmap property can be used to indicate whether to perform a copy, or simply reference the source control’s Bitmap property.
When assigning a bitmap list of one control to a bitmap list of another control, RefBitmapList property can be used to indicate whether to perform a copy, or simply move the source control’s BitmapList property to the destination control's BitmapList property.
To delete a specific page from a multipage file that supports delete operations, use the following method:
