1 | ' Classes/System/Drawing/Imaging/MetafileHeader.ab
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2 |
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3 | Type Align(8) ENHMETAHEADER3
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4 | iType As DWord
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5 | nSize As DWord
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6 |
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7 | rclBounds As RECTL
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8 | rclFrame As RECTL
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9 | dSignature As DWord
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10 | nVersion As DWord
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11 | nBytes As DWord
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12 | nRecords As DWord
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13 | nHandles As Word
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14 |
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15 | sReserved As Word
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16 | nDescription As DWord
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17 |
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18 | offDescription As DWord
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19 |
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20 | nPalEntries As DWord
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21 | szlDevice As SIZEL
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22 | szlMillimeters As SIZEL
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23 | End Type
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24 |
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25 | ' Placeable WMFs
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26 |
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27 | Type Align(2) PWMFRect16
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28 | Left As Word
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29 | Top As Word
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30 | Right As Word
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31 | Bottom As Word
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32 | End Type
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33 |
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34 | Type Align(2) WmfPlaceableFileHeader
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35 | Key As DWord
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36 | Hmf As Word
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37 | BoundingBox As PWMFRect16
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38 | Inch As Word
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39 | Reserved As DWord
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40 | Checksum As Word
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41 | End Type
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42 |
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43 | Const GDIP_EMFPLUSFLAGS_DISPLAY = &h00000001
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44 |
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45 | Class MetafileHeader
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46 | Private
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47 | mfType As MetafileType
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48 | Size As DWord
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49 | version As DWord
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50 | emfPlusFlags As DWord
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51 | dpiX As Single
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52 | dpiY As Single
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53 | X As Long
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54 | Y As Long
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55 | Width As Long
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56 | Height As Long
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57 | 'Union
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58 | ' WmfHeader As METAHEADER
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59 | EmfHeader As ENHMETAHEADER3
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60 | 'End Union
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61 | emfPlusHeaderSize As Long
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62 | logicalDpiX As Long
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63 | logicalDpiY As Long
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64 | Public
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65 | Function MetafileType() As MetafileType
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66 | Return mfType
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67 | End Function
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68 |
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69 | Function EmfPlusHeaderSize() As DWord
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70 | Return emfPlusHeaderSize
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71 | End Function
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72 |
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73 | Function Version() As DWord
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74 | Return version
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75 | End Function
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76 |
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77 | Function EmfPlusFlags() As DWord
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78 | Return emfPlusFlags
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79 | End Function
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80 |
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81 | Function DpiX() As Single
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82 | Return dpiX
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83 | End Function
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84 |
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85 | Function DpiY() As Single
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86 | Return dpiY
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87 | End Function
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88 |
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89 | Function Bounds() As Rectangle
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90 | Dim r(X, Y, Width, Height)
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91 | Return r
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92 | End Function
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93 |
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94 | Function LogicalDpiX() As Single
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95 | Return logicalDpiX
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96 | End Function
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97 |
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98 | Function LogicalDpiY() As Single
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99 | Return logicalDpiY
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100 | End Function
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101 |
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102 | Function IsWmf() As BOOL
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103 | IsWmf = (mfType = MetafileTypeWmf Or mfType = MetafileTypeWmfPlaceable)
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104 | End Function
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105 |
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106 | Function IsWmfPlaceable() As BOOL
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107 | IsWmfPlaceable = (mfType = MetafileTypeWmfPlaceable)
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108 | End Function
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109 |
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110 | Function IsEmf() As BOOL
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111 | IsEmf = (mfType = MetafileTypeEmf)
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112 | End Function
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113 |
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114 | Function IsEmfOrEmfPlus() As BOOL
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115 | IsEmfOrEmfPlus = (mfType >= MetafileTypeEmf)
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116 | End Function
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117 |
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118 | Function IsEmfPlus() As BOOL
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119 | IsEmfPlus = (mfType >= MetafileTypeEmfPlusOnly)
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120 | End Function
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121 |
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122 | Function IsEmfPlusDual() As BOOL
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123 | IsEmfPlusDual = (mfType = MetafileTypeEmfPlusDual)
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124 | End Function
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125 |
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126 | Function IsEmfPlusOnly() As BOOL /*const*/
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127 | IsEmfPlusOnly = (mfType = MetafileTypeEmfPlusOnly)
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128 | End Function
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129 |
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130 | Function IsDisplay() As BOOL
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131 | If IsEmfPlus() <> FALSE And ((EmfPlusFlags And GDIP_EMFPLUSFLAGS_DISPLAY) <> 0) Then
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132 | IsDisplay = _System_TRUE
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133 | Else
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134 | IsDisplay = _System_FALSE
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135 | End Function
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136 |
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137 | Function WmfHeader() As *METAHEADER 'const METAHEADER* const
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138 | If IsWmf() Then
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139 | Return VarPtr(EmfHeader) 'VarPtr(WmfHeader)
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140 | Else
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141 | Return 0
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142 | End If
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143 | End Function
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144 |
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145 | Function GetEmfHeader() As * /*const*/ ENHMETAHEADER3 /*const*/
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146 | If IsEmfOrEmfPlus() Then
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147 | Return VarPtr(EmfHeader) 'VarPtr(WmfHeader)
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148 | Else
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149 | Return 0
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150 | End If
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151 | End Function
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152 | End Class
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