TWidgetSet.SetBkMode function

Sets the background mix mode (transparency) of an device context.

Declaration

pascal

function SetBkMode(DC: HDC; bkMode: Integer): Integer; virtual

`DC`	The device context.
`bkMode`	The new background mode.

The previous background mode, zero on failure.

The background mode specifies the handling of non-solid painting objects, like text, hatched brushes or dotted pens.

OPAQUE mode fills the affected painting area with the background color before painting the foreground.
TRANSPARENT mode leaves the background unchanged.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.