HSV_VfromRGB method (Main Control)

Visual Basic example
Visual C++ 4.0 example

Syntax short HSV_VfromRGB (OLE_COLOR cr);

Overview: Refer to Changing Brightness and Contrast.

Remarks

Returns the corresponding Value (V) of a standard Windows COLORREF (OLE_COLOR).

Value is the amount of "black" in a color. A Value of 0 contains the most black and a Value of 255 contains the least black.

The standard Windows values for COLORREF(OLE_COLOR) represent either red, green, and blue color values, or an index into the bitmap's palette. A COLORREF value with the format 0x00BBGGRR represents the blue, green, and red color values for the specified pixel, where 0xBB is the blue value, 0xGG is the green value and 0xRR is the red value. If 0x01000000 is set in the COLORREF value (0x010000ZZ), the lower 8 bits (0xZZ) represent an index into the bitmap's palette, which holds the color value. You can specify a COLORREF value (the return value of the RGB function), or you can specify a palette index as explained in Using Palette Indexes as Color Values. Please note that just because an image has a palette, does not mean the value returned by this property is a palette index.