ShowUnderlayDlg method (ILEADRasterDlgImgEfx)

Visual Basic example

Visual C++ example

 

Syntax

short ShowUnderlayDlg (long hWnd);

Overview

Refer to Using Imaging Common Dialogs

Remarks

Displays the Underlay dialog box, and gets the options for the Underlay method.

The layout and action of the dialog depends on the flags set in the UIFlags property. Possible options are:

Value

Meaning

UNDERLAY_AUTOPROCESS

[0X00000001] process the image on OK. The Common Dialog Bitmap property must be assigned a valid bitmap before calling this method.

UNDERLAY_SHOW_CONTEXTHELP

[0X00000002] dialog should contain a context sensitive help icon.

UNDERLAY_SHOW_PREVIEW

[0X00000004] show a preview of the image in the dialog. The Common Dialog Bitmap property must be assigned a valid bitmap before calling this method.

UNDERLAY_SHOW_TOOL_ZOOMLEVEL

[0X00000008] show the "Zoom to fit" and "Zoom Normal" toolbar buttons. The UNDERLAY_SHOW_PREVIEW flag must be set in order to show these buttons.

If you include UNDERLAY_AUTOPROCESS or UNDERLAY_SHOW_PREVIEW in the UIFlags property, the Common Dialog Bitmap property must be assigned a valid bitmap before calling this method.

The properties associated with this dialog box are:

ItemsCount property

ItemDescription property

ItemFileName property

ItemBitmap property

SelectedBitmapIndex property

SelectedBitmap property

To include a Help button in the dialog, set the ShowHelpButton property to VARIANT_TRUE.

The Underlay dialog can be seen below:

image\Underlay.gif

See Also

Elements

Underlay method, ItemsCount property, ItemDescription property, ItemFileName property, ItemBitmap property, SelectedBitmap property, ShowHelpButton property, EnableZoomToFit Property, UIFlags Property, EnableMethodErrors property.