TImageEnIO.DoPreviews

Declaration

function DoPreviews(pp: TPreviewParams = [ppAll]): boolean;

Description

Executes the Previews dialog allowing the user to review and modify the parameters of image file formats (for example, JPEG quality, TIFF compression, etc).

pp is the set of image formats parameters to show in the dialog.
The style of the dialog is affected by SimplifiedParamsDialogs

The Parameters dialog for TIFF, using SimplifiedParamsDialogs = True;

The Parameters dialog for TIFF, using SimplifiedParamsDialogs = False;

Note:
◼The size of the dialog are specified by: IOPreviewsDialogWidth and IOPreviewsDialogHeight
◼You can customize the dialog using OnShowDialog

Compatiblity Information

From 12.5.0 the PCX (ppPCX) and TGA (ppTGA) properties tabs are no longer shown in the Save Properties dialog.

Demos

	Demos\ImageEditing\CompleteEditor\PhotoEn.dpr
	Demos\Other\ImageEn_Dialogs\ImageEn_Dialogs.dpr

Example

ImageEnView1.IO.LoadFromFile('C:\myimage.gif'); // loads a GIF image
ImageEnView1.IO.DoPreviews([ppGIF]); // sets GIF parameters (background, transparency...)
ImageEnView1.IO.SaveToFile('D:\newimage.gif'); // saves some image with new parameters

// Show advanced GIF saving properties with preview enabled
ImageEnView1.IO.PreviewsParams := ImageEnView1.IO.PreviewsParams + [ioppDefaultLockPreview];
ImageEnView1.IO.SimplifiedParamsDialogs := False;
ImageEnView1.IO.DoPreviews([ppGIF]);

TImageEnIO.DoPreviews