1 | ' Classes/System/Drawing/Color.ab
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2 |
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3 | #require <Classes/System/Drawing/Imaging/misc.ab>
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4 |
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5 | Class Color
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6 | Public
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7 | Sub Color()
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8 | argb = MakeARGB(255, 0, 0, 0) ' Black
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9 | End Sub
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10 |
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11 | Sub Color(ByRef c As Color)
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12 | argb = c.argb
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13 | End Sub
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14 |
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15 | Sub Color(r As Byte, g As Byte, b As Byte)
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16 | argb = MakeARGB(255, r, g, b)
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17 | End Sub
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18 |
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19 | Sub Color(a As Byte, r As Byte, g As Byte, b As Byte)
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20 | argb = MakeARGB(a, r, g, b)
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21 | End Sub
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22 |
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23 | Sub Color(newArgb As ARGB)
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24 | argb = newArgb
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25 | End Sub
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26 |
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27 | Function Operator ==(c As Color) As Boolean
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28 | Return Equals(c)
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29 | End Function
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30 |
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31 | Function Operator <>(c As Color) As Boolean
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32 | Return Not Equals(c)
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33 | End Function
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34 |
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35 | Function A() As Byte
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36 | A = (argb >> ALPHA_SHIFT) As Byte
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37 | End Function
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38 |
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39 | Function R() As Byte
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40 | R = (argb >> RED_SHIFT) As Byte
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41 | End Function
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42 |
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43 | Function G() As Byte
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44 | G = (argb >> GREEN_SHIFT) As Byte
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45 | End Function
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46 |
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47 | Function B() As Byte
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48 | B = (argb >> BLUE_SHIFT) As Byte
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49 | End Function
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50 |
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51 | Function Value() As ARGB
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52 | Value = argb
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53 | End Function
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54 |
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55 | Sub Value(value As ARGB)
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56 | argb = value
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57 | End Sub
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58 |
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59 | Sub SetFromCOLORREF(rgb As COLORREF)
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60 | If (rgb And &hff000000) = &h01000000 Then
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61 | Exit Sub ' パレットインデックス指定は無効
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62 | Else
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63 | argb = MakeARGB(255, GetRValue(rgb) As Byte, GetGValue(rgb) As Byte, GetBValue(rgb) As Byte)
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64 | End If
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65 | End Sub
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66 |
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67 | Function ToCOLORREF() As COLORREF
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68 | ToCOLORREF = RGB(R, G, B)
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69 | End Function
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70 | /*
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71 | Function ToArgb() As ARGB
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72 | ToArgb = argb
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73 | End Function
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74 | */
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75 | Static Function FromArgb(argb As ARGB) As Color
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76 | Return New Color(argb)
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77 | End Function
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78 |
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79 | Static Function FromArgb(a As Byte, base As Color) As Color
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80 | Return New Color(a, base.R, base.G, base.B)
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81 | End Function
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82 |
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83 | Static Function FromArgb(r As Byte, g As Byte, b As Byte) As Color
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84 | Return New Color(r, g, b)
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85 | End Function
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86 |
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87 | Static Function FromArgb(a As Byte, r As Byte, g As Byte, b As Byte) As Color
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88 | Return New Color(a, r, g, b)
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89 | End Function
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90 |
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91 | Override Function GetHashCode() As Long
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92 | Return argb As Long
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93 | End Function
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94 |
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95 | Function Equals(c As Color) As Boolean
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96 | Return argb = c.argb
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97 | End Function
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98 |
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99 | ' HSBを求める式はhttp://ofo.jp/osakana/cgtips/hsb.phtmlを参考にしました。
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100 | Function GetHue() As Single
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101 | Dim max As Long, min As Long, d As Long
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102 | Dim r = R
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103 | Dim g = G
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104 | Dim b = B
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105 | max = System.Math.Max(System.Math.Max(r, g), b)
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106 | min = System.Math.Min(System.Math.Min(r, g), b)
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107 | d = max - min
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108 | If g = max Then
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109 | Return ((b - r) As Double / d * 60.0 + 120.0) As Single
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110 | ElseIf b = max Then
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111 | Return ((r - g) As Double / d * 60 + 240) As Single
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112 | ElseIf g < b Then
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113 | Return ((g - b) As Double / d * 60 + 360) As Single
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114 | Else
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115 | Return ((g - b) As Double / d * 60) As Single
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116 | EndIf
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117 | End Function
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118 |
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119 | Function GetSaturation() As Single
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120 | Dim r = R
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121 | Dim g = G
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122 | Dim b = B
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123 | Dim max = System.Math.Max(System.Math.Max(r, g), b) As Long
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124 | Dim min = System.Math.Min(System.Math.Min(r, g), b) As Long
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125 | Return ( (max - min) / max ) As Single
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126 | End Function
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127 |
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128 | Function GetBrightness() As Single
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129 | Dim r = R
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130 | Dim g = G
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131 | Dim b = B
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132 | Dim max = System.Math.Max(System.Math.Max(r, g), b)
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133 | Return ( max * (1 / 255) ) As Single
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134 | End Function
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135 |
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136 | /*
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137 | ' Common color constants
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138 | Const Enum
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139 | AliceBlue = &hFFF0F8FF
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140 | AntiqueWhite = &hFFFAEBD7
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141 | Aqua = &hFF00FFFF
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142 | Aquamarine = &hFF7FFFD4
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143 | Azure = &hFFF0FFFF
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144 | Beige = &hFFF5F5DC
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145 | Bisque = &hFFFFE4C4
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146 | Black = &hFF000000
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147 | BlanchedAlmond = &hFFFFEBCD
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148 | Blue = &hFF0000FF
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149 | BlueViolet = &hFF8A2BE2
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150 | Brown = &hFFA52A2A
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151 | BurlyWood = &hFFDEB887
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152 | CadetBlue = &hFF5F9EA0
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153 | Chartreuse = &hFF7FFF00
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154 | Chocolate = &hFFD2691E
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155 | Coral = &hFFFF7F50
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156 | CornflowerBlue = &hFF6495ED
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157 | Cornsilk = &hFFFFF8DC
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158 | Crimson = &hFFDC143C
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159 | Cyan = &hFF00FFFF
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160 | DarkBlue = &hFF00008B
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161 | DarkCyan = &hFF008B8B
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162 | DarkGoldenrod = &hFFB8860B
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163 | DarkGray = &hFFA9A9A9
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164 | DarkGreen = &hFF006400
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165 | DarkKhaki = &hFFBDB76B
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166 | DarkMagenta = &hFF8B008B
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167 | DarkOliveGreen = &hFF556B2F
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168 | DarkOrange = &hFFFF8C00
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169 | DarkOrchid = &hFF9932CC
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170 | DarkRed = &hFF8B0000
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171 | DarkSalmon = &hFFE9967A
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172 | DarkSeaGreen = &hFF8FBC8B
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173 | DarkSlateBlue = &hFF483D8B
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174 | DarkSlateGray = &hFF2F4F4F
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175 | DarkTurquoise = &hFF00CED1
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176 | DarkViolet = &hFF9400D3
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177 | DeepPink = &hFFFF1493
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178 | DeepSkyBlue = &hFF00BFFF
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179 | DimGray = &hFF696969
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180 | DodgerBlue = &hFF1E90FF
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181 | Firebrick = &hFFB22222
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182 | FloralWhite = &hFFFFFAF0
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183 | ForestGreen = &hFF228B22
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184 | Fuchsia = &hFFFF00FF
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185 | Gainsboro = &hFFDCDCDC
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186 | GhostWhite = &hFFF8F8FF
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187 | Gold = &hFFFFD700
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188 | Goldenrod = &hFFDAA520
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189 | Gray = &hFF808080
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190 | Green = &hFF008000
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191 | GreenYellow = &hFFADFF2F
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192 | Honeydew = &hFFF0FFF0
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193 | HotPink = &hFFFF69B4
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194 | IndianRed = &hFFCD5C5C
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195 | Indigo = &hFF4B0082
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196 | Ivory = &hFFFFFFF0
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197 | Khaki = &hFFF0E68C
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198 | Lavender = &hFFE6E6FA
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199 | LavenderBlush = &hFFFFF0F5
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200 | LawnGreen = &hFF7CFC00
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201 | LemonChiffon = &hFFFFFACD
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202 | LightBlue = &hFFADD8E6
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203 | LightCoral = &hFFF08080
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204 | LightCyan = &hFFE0FFFF
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205 | LightGoldenrodYellow = &hFFFAFAD2
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206 | LightGray = &hFFD3D3D3
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207 | LightGreen = &hFF90EE90
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208 | LightPink = &hFFFFB6C1
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209 | LightSalmon = &hFFFFA07A
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210 | LightSeaGreen = &hFF20B2AA
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211 | LightSkyBlue = &hFF87CEFA
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212 | LightSlateGray = &hFF778899
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213 | LightSteelBlue = &hFFB0C4DE
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214 | LightYellow = &hFFFFFFE0
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215 | Lime = &hFF00FF00
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216 | LimeGreen = &hFF32CD32
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217 | Linen = &hFFFAF0E6
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218 | Magenta = &hFFFF00FF
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219 | Maroon = &hFF800000
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220 | MediumAquamarine = &hFF66CDAA
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221 | MediumBlue = &hFF0000CD
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222 | MediumOrchid = &hFFBA55D3
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223 | MediumPurple = &hFF9370DB
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224 | MediumSeaGreen = &hFF3CB371
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225 | MediumSlateBlue = &hFF7B68EE
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226 | MediumSpringGreen = &hFF00FA9A
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227 | MediumTurquoise = &hFF48D1CC
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228 | MediumVioletRed = &hFFC71585
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229 | MidnightBlue = &hFF191970
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230 | MintCream = &hFFF5FFFA
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231 | MistyRose = &hFFFFE4E1
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232 | Moccasin = &hFFFFE4B5
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233 | NavajoWhite = &hFFFFDEAD
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234 | Navy = &hFF000080
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235 | OldLace = &hFFFDF5E6
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236 | Olive = &hFF808000
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237 | OliveDrab = &hFF6B8E23
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238 | Orange = &hFFFFA500
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239 | OrangeRed = &hFFFF4500
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240 | Orchid = &hFFDA70D6
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241 | PaleGoldenrod = &hFFEEE8AA
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242 | PaleGreen = &hFF98FB98
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243 | PaleTurquoise = &hFFAFEEEE
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244 | PaleVioletRed = &hFFDB7093
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245 | PapayaWhip = &hFFFFEFD5
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246 | PeachPuff = &hFFFFDAB9
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247 | Peru = &hFFCD853F
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248 | Pink = &hFFFFC0CB
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249 | Plum = &hFFDDA0DD
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250 | PowderBlue = &hFFB0E0E6
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251 | Purple = &hFF800080
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252 | Red = &hFFFF0000
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253 | RosyBrown = &hFFBC8F8F
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254 | RoyalBlue = &hFF4169E1
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255 | SaddleBrown = &hFF8B4513
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256 | Salmon = &hFFFA8072
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257 | SandyBrown = &hFFF4A460
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258 | SeaGreen = &hFF2E8B57
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259 | SeaShell = &hFFFFF5EE
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260 | Sienna = &hFFA0522D
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261 | Silver = &hFFC0C0C0
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262 | SkyBlue = &hFF87CEEB
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263 | SlateBlue = &hFF6A5ACD
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264 | SlateGray = &hFF708090
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265 | Snow = &hFFFFFAFA
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266 | SpringGreen = &hFF00FF7F
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267 | SteelBlue = &hFF4682B4
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268 | Tan = &hFFD2B48C
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269 | Teal = &hFF008080
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270 | Thistle = &hFFD8BFD8
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271 | Tomato = &hFFFF6347
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272 | Transparent = &h00FFFFFF
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273 | Turquoise = &hFF40E0D0
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274 | Violet = &hFFEE82EE
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275 | Wheat = &hFFF5DEB3
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276 | White = &hFFFFFFFF
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277 | WhiteSmoke = &hFFF5F5F5
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278 | Yellow = &hFFFFFF00
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279 | YellowGreen = &hFF9ACD32
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280 | End Enum
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281 |
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282 | ' Shift count and bit mask for A, R, G, B components
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283 |
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284 | Const Enum
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285 | AlphaShift = 24
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286 | RedShift = 16
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287 | GreenShift = 8
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288 | BlueShift = 0
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289 | End Enum
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290 |
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291 | Const Enum
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292 | AlphaMask = &hff000000
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293 | RedMask = &h00ff0000
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294 | GreenMask = &h0000ff00
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295 | BlueMask = &h000000ff
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296 | End Enum
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297 | */
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298 | Static Function MakeARGB(a As Byte, r As Byte, g As Byte, b As Byte) As ARGB
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299 | MakeARGB = (((b As ARGB) << BLUE_SHIFT) Or _
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300 | ((g As ARGB) << GREEN_SHIFT) Or _
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301 | ((r As ARGB) << RED_SHIFT) Or _
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302 | ((a As ARGB) << ALPHA_SHIFT))
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303 | End Function
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304 |
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305 | Protected
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306 | argb As ARGB
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307 | End Class
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