QPx_BrightnessContrastPicture

QPx_BrightnessContrastPicture(pictVar; brightnessAmount; contrastAmount):error
pictVar Picture Picture variable
brightnessAmount Longint Brightness amount
contrastAmount Longint Contrast amount
error Longint Error result

Applies the "Escape Brightness and Contrast" filter to a picture.

The source picture is passed in the pictVar parameter. The source picture may be compressed or uncompressed. The filtered picture is also returned in the pictVar parameter and it is always uncompressed. If an error occurs, pictVar is set to an empty picture.

Parameter brightnessAmount must be in the -100 ... 100 range. A value of 0 means no change to the picture's brightness.

Parameter contrastAmount must be in the -100 ... 100 range. A value of 0 means no change to the picture's brightness.

Related commands

QPx_FilterPicture Applies a filter to a picture
QPx_SharpenPicture Applies the "Sharpen" filter to a picture
QPx_BlurPicture Applies the "Blur" filter to a picture
QPx_RGBBalancePicture Applies the "RGB Balance" filter to a picture
QPx_HSLBalancePicture Applies the "HSL Balance" filter to a picture

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