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VB6&GDI 实现精准中英字符测绘，可自定义行距字距。本人写的试验代码，有大量BUG。测绘之中有少许的浮点误差——这是字体设计单位浮点计算造成的，不可避免.
因为代码中很少注释，我在这里说一下关键：重点是GDI 的DrawDriverString的功能，每个字符需要一个POINTF来定位，该POINTF的原点0,0不是左上角，而是左下角，X=字符左边界，Y（当为0时，实际值为字符行距，需要除以字符设计单位emheight再乘以字体emsize（字体大小，比如10磅）。 字符宽度可以用MeasureDriverString测出，很简单。
Dim bl As Boolean
Dim startT As Date
Dim endT As Date
startT = Timer
If UBound(b) = 0 Then
Exit Function
End If
Dim fName As String
fName = pObject.FontName
Dim FSize As Long
FSize = pObject.FontSize
Dim l&
l = pObject.TextWidth("龙")
Picture1.AutoRedraw = True
pObject.Cls
InitGDIPlus
Dim G As Long
GdipCreateFromHDC pObject.hdc, G
Dim b1 As Long
GdipCreateSolidFill &HFF0000FF, b1
Dim b2 As Long
GdipCreateSolidFill &HFFFFFFFF, b2
Dim FontFam As Long
GdipCreateFontFamilyFromName StrPtr(fName), 0, FontFam
Dim StrFormat As Long
GdipCreateStringFormat 0, 0, StrFormat
GdipSetStringFormatAlign StrFormat, StringAlignmentCenter
Dim CurFont As Long
GdipCreateFont FontFam, FSize, 0, UnitPoint, CurFont
'GdipCreateFontFromDC pObject.hdc, CurFont
Dim lfont As LOGFONTWW
GdipGetLogFontW CurFont, G, lfont
Debug.Print "charset:", lfont.lfCharSet
Dim dfontFam As Long
GdipCreateFontFamilyFromName StrPtr("微软雅黑"), 0, dfontFam
Dim dcurFont As Long
GdipCreateFontFromDC pObject.hdc, dcurFont
' GdipCreateFont dfontFam, fsize, 0, UnitPoint, dcurFont
GdipSetTextRenderingHint G, TextRenderingHintSystemDefault
'！！！！！！！！！！！从这里开始是重点！！！！！！！！！！！！！！
Dim i&
i = (UBound(b) 1) \ 2
If i >= 50000 Then
ReDim pf(50000)
Else
ReDim pf(i - 1)
End If
ReDim RcF(1 To UBound(pf))
Dim box As RECTF
Dim m As Long
Dim nums As Integer
GdipGetCellDescent FontFam, 0, nums
Dim emhei As Integer
GdipGetEmHeight FontFam, 0, emhei
Dim emhangju As Integer
GdipGetLineSpacing FontFam, 0, emhangju
Dim numUp As Double
numUp = ((emhangju) / emhei) * FSize
pf(0).y = 0
pf(0).x = Abs(ziju)
m = NewMatrix(1, 0, 0, 1, 0, 0)
Dim sc$
sc = String$(1, 0)
ReDim pline(0)
pline(0).Bottom = numUp
For i = 0 To UBound(pf)
CopyMemory ByVal StrPtr(sc), b(i * 2), 2
GdipMeasureDriverString G, StrPtr(sc), 1, CurFont, pf(0), 1, m, box
If i 1 > UBound(pf) Then
Else
pf(i 1).x = pf(i).x box.Right ziju
RcF(i 1).Left = pf(i).x
RcF(i 1).Bottom = box.Bottom hangju 0.5
RcF(i 1).Right = pf(i 1).x - pf(i).x 0.5
If AscW(sc) = 13 Then
i = i 1
pf(i 1).x = Abs(ziju)
pf(i).y = pf(i).y numUp
RcF(i 1).Left = pf(i).x
RcF(i 1).Bottom = box.Bottom hangju 0.5
RcF(i 1).Right = pf(i).x - pf(i - 1).x 0.5
RcF(i 1).Top = pf(i).y - (box.Bottom hangju) ((nums) / emhei) * FSize
numUp = numUp box.Bottom hangju
If numUp > pObject.Height - pf(0).y And Not (bl) Then
ReDim Preserve pf(i - 2)
ReDim Preserve RcF(1 To i - 1)
GdipDrawDriverString G, VarPtr(b(0)), i - 1, CurFont, b1, pf(0), 1, m
DrawText = i
i = i - 2
bl = True
Exit For
Else
End If
ReDim Preserve pline(UBound(pline) 1)
pline(UBound(pline)).index = i 1
pline(UBound(pline)).Bottom = numUp
ElseIf (pf(i 1).x > pObject.Width - pf(0).y * 1.5) Then
pf(i 1).x = Abs(ziju)
pf(i).y = pf(i).y numUp
RcF(i 1).Top = pf(i).y - (box.Bottom hangju) ((nums) / emhei) * FSize
numUp = numUp box.Bottom hangju
If numUp > pObject.Height - pf(0).y And Not (bl) Then
ReDim Preserve pf(i 2)
ReDim Preserve RcF(1 To i 3)
i = i 2
'！！！！！！！注意，这里是判断字符多出窗口，直接绘制而后跳出！！！！！！
GdipDrawDriverString G, VarPtr(b(0)), i - 1, CurFont, b1, pf(0), 1, m
DrawText = i
i = i - 2
bl = True
Exit For
Else
End If
ReDim Preserve pline(UBound(pline) 1)
pline(UBound(pline)).index = i 1
pline(UBound(pline)).Bottom = numUp
End If
If pf(i 1).x - Abs(ziju) < 1 Then
Else
pf(i).y = pf(i).y numUp
RcF(i 1).Top = pf(i).y - (box.Bottom hangju) ((nums) / emhei) * FSize
End If
End If
Next
If Not bl Then
i = i - 1
'pObject.Cls
ReDim Preserve pf(i - 1)
ReDim Preserve RcF(1 To i)
'！！！！！！！！！！！一次性输出，输出一万字符最多90毫秒（而且已经计算好了每个字符的绝对位置）！！！！！！！！！！！！！！
GdipDrawDriverString G, VarPtr(b(0)), i, CurFont, b1, pf(0), 1, m
DrawText = i
'！！！！！！！！！！！输出完毕！！！！！！！！！！！！！！！
End If