有人能告诉我如何从ARGB计算出相应的Windows颜色吗?我知道有一个ColorTranslator.ToWin32()可以进行计算,但是具体是怎么做的呢?
另外,OLE颜色和Windows(win32)颜色之间有什么区别?
JD。
有人能告诉我如何从ARGB计算出相应的Windows颜色吗?我知道有一个ColorTranslator.ToWin32()可以进行计算,但是具体是怎么做的呢?
另外,OLE颜色和Windows(win32)颜色之间有什么区别?
JD。
public static int ToWin32(Color c)
{
return ((c.R | (c.G << 8)) | (c.B << 0x10));
}
ColorTranslator.ToOle(...)用于测试颜色是否是标准系统颜色,否则将使用ToWin32转换:
public static int ToOle(Color c)
{
if (c.IsKnownColor)
{
switch (c.ToKnownColor())
{
case KnownColor.ActiveBorder:
return -2147483638;
case KnownColor.ActiveCaption:
return -2147483646;
case KnownColor.ActiveCaptionText:
return -2147483639;
case KnownColor.AppWorkspace:
return -2147483636;
case KnownColor.Control:
return -2147483633;
case KnownColor.ControlDark:
return -2147483632;
case KnownColor.ControlDarkDark:
return -2147483627;
case KnownColor.ControlLight:
return -2147483626;
case KnownColor.ControlLightLight:
return -2147483628;
case KnownColor.ControlText:
return -2147483630;
case KnownColor.Desktop:
return -2147483647;
case KnownColor.GrayText:
return -2147483631;
case KnownColor.Highlight:
return -2147483635;
case KnownColor.HighlightText:
return -2147483634;
case KnownColor.HotTrack:
return -2147483635;
case KnownColor.InactiveBorder:
return -2147483637;
case KnownColor.InactiveCaption:
return -2147483645;
case KnownColor.InactiveCaptionText:
return -2147483629;
case KnownColor.Info:
return -2147483624;
case KnownColor.InfoText:
return -2147483625;
case KnownColor.Menu:
return -2147483644;
case KnownColor.MenuText:
return -2147483641;
case KnownColor.ScrollBar:
return -2147483648;
case KnownColor.Window:
return -2147483643;
case KnownColor.WindowFrame:
return -2147483642;
case KnownColor.WindowText:
return -2147483640;
case KnownColor.ButtonFace:
return -2147483633;
case KnownColor.ButtonHighlight:
return -2147483628;
case KnownColor.ButtonShadow:
return -2147483632;
case KnownColor.GradientActiveCaption:
return -2147483621;
case KnownColor.GradientInactiveCaption:
return -2147483620;
case KnownColor.MenuBar:
return -2147483618;
case KnownColor.MenuHighlight:
return -2147483619;
}
}
return ToWin32(c);
}
.NET中的颜色对象包括一个alpha通道(即透明度水平),而Win32颜色仅为RGB。因此,要在两者之间进行转换,您需要像以下这样的内容:
static public int ConvertColourToWindowsRGB(Color dotNetColour)
{
int winRGB = 0;
// windows rgb values have byte order 0x00BBGGRR
winRGB |= (int)dotNetColour.R;
winRGB |= (int)dotNetColour.G << 8;
winRGB |= (int)dotNetColour.B << 16;
return winRGB;
}
static public Color ConvertWindowsRGBToColour(int windowsRGBColour)
{
int r = 0, g = 0, b = 0;
// windows rgb values have byte order 0x00BBGGRR
r = (windowsRGBColour & 0x000000FF);
g = (windowsRGBColour & 0x0000FF00) >> 8;
b = (windowsRGBColour & 0x00FF0000) >> 16;
Color dotNetColour = Color.FromArgb(r, g, b);
return dotNetColour;
}