1997
Spencer Kimball & Peter Mattis
Modify brightness/contrast in the specified drawable.
This procedures allows the brightness and contrast of the specified drawable to be modified. Both 'brightness' and 'contrast' parameters are defined between -0.5 and 0.5.
unknown
Type | Name | Description |
---|---|---|
PF_DRAWABLE | drawable | The drawable |
PF_FLOAT | brightness | Brightness adjustment (-0.5 <= brightness <= 0.5) |
PF_FLOAT | contrast | Contrast adjustment (-0.5 <= contrast <= 0.5) |
None