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【已解决】求教au3如何调用函数GdipDrawDriverString在绘制字符串时控制行间距和字符

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发表于 2024-3-1 22:59:51 | 显示全部楼层 |阅读模式
本帖最后由 zghwelcome 于 2024-4-8 20:10 编辑


_GDIPlus_GraphicsDrawString 函数绘制字符串时无法控制行间距及字符间距,搜索后需要调用 GdipDrawDriverString 实现,下面是一段VB代码,求大佬转换成au3,感谢!
<DllImport("Gdiplus.dll", CharSet:=CharSet.Unicode)>  

Friend Shared Function GdipDrawDriverString(ByVal graphics As IntPtr, _
          ByVal text As String, _
          ByVal length As Integer,  _
          ByVal font As IntPtr,  _
          ByVal brush As IntPtr, _
          ByVal positions() As PointF, _
          ByVal flags As Integer, _
          ByVal matrix As IntPtr) As Integer
End Function


Private Shared Sub DrawDriverString(ByVal graphics As Graphics, _
          ByVal text As String, ByVal font As Font,  _
          ByVal brush As Brush, ByVal positions() As PointF)

    DrawDriverString(graphics, text, font, brush, positions, Nothing)

End Sub

Private Shared Sub DrawDriverString(ByVal G As Graphics, _
          ByVal T As String, ByVal F As Font, _
          ByVal B As Brush, ByVal P() As PointF, ByVal M As Matrix)

    If (G Is Nothing) Then Throw New ArgumentNullException("graphics")

    If (T Is Nothing) Then Throw New ArgumentNullException("text")

    If (F Is Nothing) Then Throw New ArgumentNullException("font")

    If (B Is Nothing) Then Throw New ArgumentNullException("brush")

    If (P Is Nothing) Then Throw New ArgumentNullException("positions")

    Dim Field As FieldInfo

    Field = GetType(Graphics).GetField("nativeGraphics", BindingFlags.Instance Or BindingFlags.NonPublic)

    Dim hGraphics As IntPtr = Field.GetValue(G)

    Field = GetType(Font).GetField("nativeFont", BindingFlags.Instance Or BindingFlags.NonPublic)

    Dim hFont As IntPtr = Field.GetValue(F)

    Field = GetType(Brush).GetField("nativeBrush", BindingFlags.Instance Or BindingFlags.NonPublic)

    Dim hBrush As IntPtr = Field.GetValue(B)

    Dim hMatrix As IntPtr = IntPtr.Zero

    If (Not M Is Nothing) Then
      Field = GetType(Matrix).GetField("nativeMatrix", BindingFlags.Instance Or BindingFlags.NonPublic)
      hMatrix = Field.GetValue(M)
    End If

    Dim result As Integer = GdipDrawDriverString(hGraphics, T, T.Length, hFont, hBrush, P, DriverStringOptions.CmapLookup, hMatrix)

End Sub

Private Enum DriverStringOptions
    CmapLookup = 1
    Vertical = 2
    Advance = 4
    LimitSubpixel = 8
End Enum

Public Sub Draw3(ByVal Text As String)
    Clear()
    Dim i As Integer, tP() As PointF
    ReDim tP(Text.Length - 1)
    For i = 0 To Text.Length - 1
      tP(i).X = (i Mod 52) * 16 + 3
      tP(i).Y = 3 + Int(i / 52) * mLineHeight + 12
    Next
    DrawDriverString(mG, Text, mFont, New SolidBrush(mForeColor), tP)

End Sub
 楼主| 发表于 2024-3-1 23:01:09 | 显示全部楼层
上面vb代码 原网址
发表于 2024-3-2 15:11:27 | 显示全部楼层
看不懂也不知道应用场景~ 感觉这单字坐标的搞法只适合等宽字体……  不知道 _GDIPlus_FontFamilyGetLineSpacing 有没有启发

 楼主| 发表于 2024-3-2 16:25:38 | 显示全部楼层
afan 发表于 2024-3-2 15:11
看不懂也不知道应用场景~ 感觉这单字坐标的搞法只适合等宽字体……  不知道 _GDIPlus_FontFamilyGetLineSpa ...

就是想在图片绘制一段文字时,控制文字段落的行间距和字符间距
发表于 2024-3-5 08:44:47 | 显示全部楼层
看明白了,暂时没时间写
 楼主| 发表于 2024-3-5 16:16:24 | 显示全部楼层
haijie1223 发表于 2024-3-5 08:44
看明白了,暂时没时间写

静候大佬
发表于 2024-4-8 17:56:04 | 显示全部楼层

差点都忘了你这个问题了。。。
#NoTrayIcon
#include <Winapi.au3> 
#include <gdiplus.au3> 
Global $hGUI = GUICreate("GdipDrawDriverString", 850, 550)
GUISetState()
_GDIPlus_Startup()
Global $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGUI) 
Global $hBrush = _GDIPlus_BrushCreateSolid(0xFF000000)
Global $hFamily = _GDIPlus_FontFamilyCreate("宋体")
Global $hFont = _GDIPlus_FontCreate($hFamily, 12, 2)
Global $Text = _
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                '披绣闼,俯雕甍,山原旷其盈视,川泽纡其骇瞩。闾阎扑地,钟鸣鼎食之家;舸舰弥津,青雀黄龙之舳。云销雨霁,彩彻区明。落霞与孤鹜齐飞,秋水共长天一色。渔舟唱晚,响穷彭蠡之滨;雁阵惊寒,声断衡阳之浦。' & @CRLF & _
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                '滕王高阁临江渚,佩玉鸣鸾罢歌舞。' & @CRLF & _
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                '阁中帝子今何在?槛外长江空自流。'
Enum $CmapLookup = 1, $Vertical = 2, $Advance = 4, $LimitSubpixel = 8
Global $mLineHeight = 25;//调整行间距
Global $pBuffer = _WinAPI_CreateBuffer(8 * StringLen($Text))
For $i = 0 To StringLen($Text) - 1
        Local $tP = DllStructCreate('float x;float y;', $pBuffer + $i * 8)
        DllStructSetData($tP, 'x', Mod($i, 52) * 16 + 3)
        DllStructSetData($tP, 'y', 3 + Int($i / 52) * $mLineHeight + 12)
Next
GdipDrawDriverString($hGraphic, $Text, StringLen($Text), $hFont, $hBrush, $pBuffer, $CmapLookup, Null)
Do
        Sleep(50)
Until GUIGetMsg() = -3
_WinAPI_FreeMemory($pBuffer)
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()
Func GdipDrawDriverString($hGraphics, $sString, $length, $hFont, $hBrush, $tPointF, $flags, $matrix)
        Local $aCall = DllCall($__g_hGDIPDll, "int", "GdipDrawDriverString", "handle", $hGraphics, "wstr", $sString, "int", $length, "handle", $hFont, "handle", $hBrush, "ptr", $tPointF, "int", $flags, "handle", $matrix);
        If @error Then Return SetError(@error, @extended, False)
        If $aCall[0] Then Return SetError(10, $aCall[0], False)
        Return True
EndFunc   ;==>GdipDrawDriverString

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 楼主| 发表于 2024-4-8 20:07:27 | 显示全部楼层
haijie1223 发表于 2024-4-8 17:56
差点都忘了你这个问题了。。。

感谢大佬解答
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