Note that it also can hold a value for the alpha-channel (for more information, see the Alpha-Blended Drawing section). There are several related non-members: QRgb is a typdef for an unsigned int representing the RGB value triplet (r, g, b). Using the RGB color model, the color components can in addition be accessed with rgb().
The values of the color components can also be retrieved in one go using the getRgb(), getHsv() and getCmyk() functions. The color components can be retrieved individually, e.g with red(), hue() and cyan(). For performance reasons, QColor mostly disregards illegal colors, and for that reason, the result of using an invalid color is undefined. For example, a RGB color with RGB values out of range is illegal. The isValid() function indicates whether a QColor is legal at all. To get a lighter or darker color use the lighter() and darker() functions respectively. Colors can also be set using setRgb(), setHsv() and setCmyk(). The name() function returns the name of the color in the format "#RRGGBB". The color names are taken from the SVG 1.0 color names. The spec() function tells how the color was specified.Ī color can be set by passing an RGB string (such as "#112233"), or an ARGB string (such as "#ff112233") or a color name (such as "blue"), to the setNamedColor() function. Alternatively, a color can be converted to any of the three formats using the convertTo() function (returning a copy of the color in the desired format), or any of the setRgb(), setHsv() and setCmyk() functions altering this color's format. In addition the static fromRgb(), fromHsv() and fromCmyk() functions create colors from the specified values. These functions return a copy of the color using the desired format. To create a QColor based on either HSV or CMYK values, use the toHsv() and toCmyk() functions respectively. The QColor constructor creates the color based on RGB values. SetRgbF(qreal r, qreal g, qreal b, qreal a = 1.0) SetHsvF(qreal h, qreal s, qreal v, qreal a = 1.0) SetHslF(qreal h, qreal s, qreal l, qreal a = 1.0) SetCmykF(qreal c, qreal m, qreal y, qreal k, qreal a = 1.0) SetCmyk(int c, int m, int y, int k, int a = 255) GetRgbF(qreal * r, qreal * g, qreal * b, qreal * a = nullptr) const GetRgb(int * r, int * g, int * b, int * a = nullptr) const GetHsvF(qreal * h, qreal * s, qreal * v, qreal * a = nullptr) const GetHsv(int * h, int * s, int * v, int * a = nullptr) const GetHslF(qreal * h, qreal * s, qreal * l, qreal * a = nullptr) const GetHsl(int * h, int * s, int * l, int * a = nullptr) const
GetCmykF(qreal * c, qreal * m, qreal * y, qreal * k, qreal * a = nullptr) const GetCmyk(int * c, int * m, int * y, int * k, int * a = nullptr) const
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