Determines the format used if an image is saved. This is the number of the filter in the string returned through the ImageExportFilters property, beginning with number one. If the ImageExportFilters property is used to initialize the Filter property of a Common Dialog Control, the FilterIndex property of the Common Dialog Control can be used to set this property. The ObjectCurrent property determines the image.
TXTextControl.ImageExportFormat [= index]
Run time only.