這裏有代碼 HSL和RGB互轉的 (註：HSB就是HSL，B和L都有亮度的意思)
Public?Type?HSBHue?As?Integer
Saturation?As?Integer
Brightness?As?Integer
End?Type
Public?Type?RGB
Red?As?Integer
Green?As?Integer
Bue?As?Integer
End?Type
'?轉換RGB到HSB
Public?Function?RGB2HSB(ByVal?R?As?Integer,?ByVal?G?As?Integer,?ByVal?B?As?Integer)?As?HSB
Dim?nH?As?Single,?nS?As?Single,?nV?As?Single
Dim?nR?As?Single,?nG?As?Single,?nB?As?Single
Dim?ndelR?As?Single,?ndelG?As?Single,?ndelB?As?Single
Dim?nmax?As?Single,?nmin?As?Single,?ndelMax?As?Single
nR?=?R?/?255
nG?=?G?/?255
nB?=?B?/?255
nmax?=?Max(Max(nR,?nG),?nB)
nmin?=?Min(Min(nR,?nG),?nB)
ndelMax?=?nmax?-?nmin
nV?=?nmax
If?(ndelMax?=?0)?Then
nH?=?0
nS?=?0
Else
nS?=?ndelMax?/?nmax
ndelR?=?(((nmax?-?nR)?/?6)?+?(ndelMax?/?2))?/?ndelMax
ndelG?=?(((nmax?-?nG)?/?6)?+?(ndelMax?/?2))?/?ndelMax
ndelB?=?(((nmax?-?nB)?/?6)?+?(ndelMax?/?2))?/?ndelMax
If?(nR?=?nmax)?Then
nH?=?ndelB?-?ndelG
ElseIf?(nG?=?nmax)?Then
nH?=?(1?/?3)?+?ndelR?-?ndelB
ElseIf?(nB?=?nmax)?Then
nH?=?(2?/?3)?+?ndelG?-?ndelR
End?If
If?(nH?<?0)?Then?nH?=?nH?+?1
If?(nH?>?1)?Then?nH?=?nH?-?1
End?If
RGB2HSB.Hue?=?nH?*?360
RGB2HSB.Saturation?=?nS?*?100
RGB2HSB.Brightness?=?nV?*?100
End?Function
'?轉換HSB到RGB
Public?Function?HSB2RGB(ByVal?H?As?Integer,?ByVal?S?As?Integer,?ByVal?B?As?Integer)?As?RGB
Dim?nH?As?Single,?nS?As?Single,?nV?As?Single
Dim?nR?As?Single,?nG?As?Single,?nB?As?Single
Dim?hi?As?Single,?f?As?Single,?p?As?Single,?q?As?Single,?t?As?Single
nH?=?H?/?360
nS?=?S?/?100
nV?=?B?/?100
If?(S?=?0)?Then
nR?=?nV?*?255
nG?=?nV?*?255
nB?=?nV?*?255
Else
hi?=?nH?*?6
If?(hi?=?6)?Then?hi?=?0
f?=?Int(hi)
p?=?nV?*?(1?-?nS)
q?=?nV?*?(1?-?nS?*?(hi?-?f))
t?=?nV?*?(1?-?nS?*?(1?-?(hi?-?f)))
If?(f?=?0)?Then
nR?=?nV
nG?=?t
nB?=?p
ElseIf?(f?=?1)?Then
nR?=?q
nG?=?nV
nB?=?p
ElseIf?(f?=?2)?Then
nR?=?p
nG?=?nV
nB?=?t
ElseIf?(f?=?3)?Then
nR?=?p
nG?=?q
nB?=?nV
ElseIf?(f?=?4)?Then
nR?=?t
nG?=?p
nB?=?nV
Else
nR?=?nV
nG?=?p
nB?=?q
End?If
End?If
HSB2RGB.Red?=?nR?*?255
HSB2RGB.Green?=?nG?*?255
HSB2RGB.Bue?=?nB?*?255
End?Function
把H,S,L當成參數調用，返回值就是壹個類型為“RGB”的用戶定義類型
示例：
Dim?aa?As?RGBaa=HSB2RGB(1,?2,?3)
Print?"R:"?&?aa.Red?&?"?G:"?&?aa.Green?&?"?B:"?&?aa.Bue
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