isCOBOL Evolve : User Interface : Controls Reference : TREE-VIEW : Properties : Background-Bitmap-Scale
Background-Bitmap-Scale
This property specifies what to do if the image dimensions don’t fit the Tree-View area identified by Lines and Size properties.
The possible values for this property are:
0
The image is not altered. In this case, if the image is too large, it will be truncated, if it’s too small, it will be aligned to the top left corner of the Tree-View area.
1
The image is resized to fit completely the Tree-View area. The aspect ratio may be altered. This is also the default behavior when Background-Bitmap-Scale is not set.
2
The image is resized maintaining the aspect ratio. The resized image may not fit completely the Tree-View area.
The quality of the scaled image is controlled by the iscobol.bitmap_scale.best_quality (boolean) configuration property.
If the Tree-View control is resized by a Layout-Manager and Background-Bitmap-Scale is set to "1" or "2", then the image is resized along with the window.
 
Example - Define a tree-view control with background image
working-storage section.
...
77 watermark-jpg pic s9(9) comp-4.
...
screen section.
...
  03 screen-1-tv-1 Tree-View
     line 17.7
     column 20.0
     size 24.3 cells 
     lines 27.8 cells 
     background-bitmap-handle watermark-jpg
     background-bitmap-scale 0
    .