QPix Command Reference
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QPx_BrightnessContrastPicture(pictVar; brightnessAmount; contrastAmount):error | |||
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pictVar | Picture | Picture variable |
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brightnessAmount | Longint | Brightness amount |
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contrastAmount | Longint | Contrast amount |
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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 |