Oracle Forms Developer – Form Builder Reference, Volume 1

would increase the size of your image 100 times, and could cause your application to run out of
memory.
• When specifying ZOOM_IN_FACTOR or ZOOM_OUT_FACTOR, you can use any positive
integer value for zoom_factor, but performance is optimal if you use 2, 4, or 8.
• When specifying ZOOM_PERCENT, you can use any positive integer value for zoom_factor. To
enlarge the image, specify a percentage greater than 100.
• The operator must use the mouse to select a region before specifying SELECTION_RECTANGLE,
or Form Builder will return an error message.
• Your design should include scroll bars on images that use SELECTION_RECTANGLE.
• Valid for both color and black-and-white images.
IMAGE_ZOOM examples
The following example shows a When-Button-Pressed trigger that doubles the size of the image every
time the button is pressed.
Image_Zoom(’my_image’, zoom_in_factor, 2);
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