Specifies Scan GUI window attributes.
| IG_GUI_SCAN_PAGE_HANDLE | Get handle of internal page browser. |
| IG_GUI_SCAN_UI_SHOW | Specifies whether to use UI (TRUE) or not (FALSE). |
| IG_GUI_SCAN_AUTO_DELETE | Specifies whether to delete images when GUI window destroyed. |
| IG_GUI_SCAN_CAP_LAYOUT_RECT | Specifies scanning rectangle. Similar with IG_SCAN_CAP_LAYOUT_XXX scanner attributes. |
| IG_GUI_SCAN_CM_ACQUIRE | To simulate menu command Single Page Acquire. |
| IG_GUI_SCAN_CM_MACQUIRE | To simulate menu command Multiple Pages Acquire. |
| IG_GUI_SCAN_CM_SCAN_DLG | To simulate menu command Set Scan Parameters. |
| IG_GUI_SCAN_CM_TRNSF_DLG | To simulate menu command Non Native Transfer. |
See IG_GUI_scan_attribute_get function description for more info.