PictureDown (Thumbnail Control/ Custom Property)

This property sets a background image displayed on the display area of the thumbnail image

[C++Builder] thumbcontrolname->PictureDown[ = TPicture ]

[Delphi] thumbcontrolname.PictureDown[ = TPicture ]

Property Value

The background image displayed on the thumbnail image

Explanation

The PictureDown property sets a background image displayed on the the display area of the thumbnail image (the black portions of the display area) when the mouse is clicked. This property could be used to create the effect of window blinds being opened to reveal a thumbnail image when the mouse is clicked on that thumbnail image frame.

This property is enabled when the Style property is vikCustom. The black RGB(0,0,0) portions of the background image is set as a transparent color. The thumbnail image will be displayed through this portion of the background image.

Example:

In C++Builder

VIkThumb1->Picture->LoadFromFile("HalfOpen.bmp");
VIkThumb1->PictureDown->LoadFromFile("FullOpen.bmp");

In Delphi

VIkThumb1.Picture.LoadFromFile('HalfOpen.bmp');
VIkThumb1.PictureDown.LoadFromFile('FullOpen.bmp');

Setting this value

This value can be set at design-time and run-time.

Retrieving this value

This value can be retrieved at run-time.