Declaration
property OnFilter: TIEShowFrameEvent;
Description
Occurs whenever a frame needs to be displayed. It can be used to implement your own custom filter.
Note:
◼ShowFrame defaults to True, unless it has been filtered by
Filter◼OnFilter is called frequently. Ensure your filtering code is quick to avoid slowing user interaction
◼If you change your filter, you should call
Update | Demos\Multi\Filtering\Filtering.dpr |
procedure TMainForm.IEMViewFilter(Sender: TObject; Index: integer; const Filename: string; var ShowFrame: Boolean);
begin
// check filename does not exist in our excluded files list list
if fExcludedFiles.IndexOf( Filename ) >= 0 then
ShowFrame := False;
end;
procedure TMainForm.ImageEnMView1Filter(Sender: TObject; Index: Integer; const
Filename: string; var ShowFrame: Boolean);
begin
// Hide Landscape images
if ShowFrame and
chkHideLandscape.checked and
( ImageEnMView1.ImageWidth[Index] > ImageEnMView1.ImageHeight[Index] ) then
ShowFrame := False
else
// Hide JPEG images
if ShowFrame and
chkHideJPEG.checked and
(( Lowercase( ExtractFileExt( ImageEnMView1.ImageFilename[Index] )) = '.jpg' ) or
( Lowercase( ExtractFileExt( ImageEnMView1.ImageFilename[Index] )) = '.jpeg' )) then
ShowFrame := False;
end;
See Also
◼Filter◼FilterField◼ImageFiltered◼FilteredCount