效果如图
主要属性包括字体、V 和 H 对齐、前后颜色和方向（向上和向下）。
代码：
代码语言：javascript复制LOCAL obj
obj = CreateObject("TForm")
obj.Show(1)
DEFINE CLASS Tform As Form
Width=460
Height=300
Caption=" Vertical Labels"
AutoCenter=.T.
ADD OBJECT text1 As TextBox WITH;
Top=10, Left=70, Width=260, Height=21, Value="Visual FoxPro Demo"
ADD OBJECT button1 As CommandButton WITH Top=10, Left=334,;
Width=60, Height=24, Caption="Set", Default=.T.
ADD OBJECT vlabel1 As VLabel WITH Top=0, Height=300,;
Left=0, Width=60, FontName="Impact",;
FontSize=24, ForeColor=Rgb(192,0,128), BackColor=Rgb(192,192,192),;
Direction=0, VAlignment=1, Alignment=1
ADD OBJECT vlabel2 As VLabel WITH Top=0, Height=300,;
Left=406, Width=54, FontName="Verdana", FontSize=20,;
ForeColor=Rgb(80,80,80), BackColor=Rgb(192,192,192),;
Direction=1, VAlignment=1, Alignment=1
ADD OBJECT vlabel3 As VLabel WITH;
Top=50, Height=250, Left=70, Width=54, VAlignment=0,;
VCaption = "Default font is used for this label"
PROCEDURE Init
THIS.SetLabel
THIS.vlabel3.DrawCaption
PROCEDURE button1.Click
ThisForm.SetLabel
PROCEDURE SetLabel
STORE RTRIM(THIS.text1.Value) TO THIS.vlabel1.VCaption,;
THIS.vlabel2.VCaption
ENDDEFINE
DEFINE CLASS VLabel As Image
PROTECTED bitmapfile
VCaption="" && "Caption" does not work
Direction=0
Alignment=0
VAlignment=2
Autowidth=.F.
BackColor=-1
FontBold=.F.
FontItalic=.F.
FontName="Arial"
FontSize=10
FontStrikethru=.F.
FontUnderline=.F.
ForeColor=0
PROCEDURE Init
THIS.bitmapfile=SUBSTR(SYS(2015), 3) ".bmp"
PROCEDURE Destroy
IF FILE(THIS.bitmapfile) && deleting temporary bitmap file
DELETE FILE (THIS.bitmapfile)
ENDIF
PROCEDURE VCaption_ASSIGN(vParam)
THIS.VCaption = m.vParam
THIS.DrawCaption
PROCEDURE Alignment_ASSIGN(vParam)
THIS.Alignment = m.vParam
THIS.DrawCaption
PROCEDURE VAlignment_ASSIGN(vParam)
THIS.VAlignment = m.vParam
THIS.DrawCaption
PROCEDURE Direction_ASSIGN(vParam)
THIS.Direction = m.vParam
THIS.DrawCaption
PROCEDURE BackColor_ASSIGN(vParam)
THIS.BackColor = m.vParam
THIS.DrawCaption
PROCEDURE Autowidth_ASSIGN(vParam)
THIS.Autowidth = m.vParam
THIS.DrawCaption
PROCEDURE FontBold_ASSIGN(vParam)
THIS.FontBold = m.vParam
THIS.DrawCaption
PROCEDURE FontItalic_ASSIGN(vParam)
THIS.FontItalic = m.vParam
THIS.DrawCaption
PROCEDURE FontName_ASSIGN(vParam)
THIS.FontName = m.vParam
THIS.DrawCaption
PROCEDURE FontSize_ASSIGN(vParam)
THIS.FontSize = m.vParam
THIS.DrawCaption
PROCEDURE FontStrikethru_ASSIGN(vParam)
THIS.FontStrikethru = m.vParam
THIS.DrawCaption
PROCEDURE FontUnderline_ASSIGN(vParam)
THIS.FontUnderline = m.vParam
THIS.DrawCaption
PROCEDURE ForeColor_ASSIGN(vParam)
THIS.ForeColor = m.vParam
THIS.DrawCaption
PROCEDURE DrawCaption
#DEFINE OUT_OUTLINE_PRECIS 8
#DEFINE CLIP_STROKE_PRECIS 2
#DEFINE PROOF_QUALITY 2
#DEFINE LOGPIXELSY 90
DECLARE INTEGER SelectObject IN gdi32 INTEGER hdc, INTEGER hObject
DECLARE INTEGER SetTextColor IN gdi32 INTEGER hdc, INTEGER crColor
DECLARE INTEGER GetDeviceCaps IN gdi32 INTEGER hdc, INTEGER nIndex
DECLARE INTEGER SetBkMode IN gdi32 INTEGER hdc, INTEGER iBkMode
DECLARE INTEGER CreateSolidBrush IN gdi32 LONG crColor
DECLARE INTEGER DeleteObject IN gdi32 INTEGER hObject
DECLARE INTEGER DeleteDC IN gdi32 INTEGER hdc
DECLARE INTEGER GetDesktopWindow IN user32
DECLARE INTEGER GetWindowDC IN user32 INTEGER hwnd
DECLARE INTEGER CreateCompatibleDC IN gdi32 INTEGER hdc
DECLARE INTEGER ReleaseDC IN user32 INTEGER hwnd, INTEGER hdc
DECLARE INTEGER GetTextExtentPoint32 IN gdi32;
INTEGER hdc, STRING lpString,;
INTEGER cbString, STRING @lpSize
DECLARE INTEGER CreateCompatibleBitmap IN gdi32;
INTEGER hdc, INTEGER nWidth, INTEGER nHeight
DECLARE INTEGER TextOut IN gdi32;
INTEGER hdc, INTEGER x, INTEGER y,;
STRING lpString, INTEGER nCount
DECLARE INTEGER CreateFont IN gdi32;
INTEGER nHeight, INTEGER nWidth, INTEGER nEscapement,;
INTEGER nOrientation, INTEGER fnWeight, INTEGER fdwItalic,;
INTEGER fdwUnderline, INTEGER fdwStrikeOut, INTEGER fdwCharSet,;
INTEGER fdwOutPrecis, INTEGER fdwClipPrecis, INTEGER fdwQuality,;
INTEGER fdwPitchAndFamily, STRING lpszFace
DECLARE INTEGER FillRect IN user32;
INTEGER hDC, STRING @RECT, INTEGER hBrush
LOCAL hDesktop, hDesktopDC, hMemDC, hMemBmp, hFont, hBrush, nBaseWidth,;
nBaseHeight, BaseRect, nTextWidth, nTextHeight, nX, nY
nBaseWidth = THIS.Width
nBaseHeight = THIS.Height
BaseRect = num2dword(0) num2dword(0) ;
num2dword(nBaseWidth) num2dword(nBaseHeight)
hDesktop = GetDesktopWindow()
hDesktopDC = GetWindowDC(hDesktop)
hMemDC = CreateCompatibleDC(hDesktopDC)
hMemBmp = CreateCompatibleBitmap(hDesktopDC, nBaseWidth, nBaseHeight)
= DeleteObject(SelectObject(hMemDC, hMemBmp))
= ReleaseDC(hDesktop, hDesktopDC)
hFont = CreateFont(-THIS.FontSize *;
GetDeviceCaps(hMemDC, LOGPIXELSY) / 72,;
0, Iif(THIS.Direction=0, 900, -900),0,;
Iif(THIS.FontBold,700,400), Iif(THIS.FontItalic,1,0),0,0,;
0, OUT_OUTLINE_PRECIS, CLIP_STROKE_PRECIS,;
PROOF_QUALITY, 0, THIS.FontName)
= DeleteObject(SelectObject(hMemDC, hFont)))
STORE 0 TO nTextWidth, nTextHeight
= GetTextRect(hMemDC, THIS.VCaption,;
@nTextWidth, @nTextHeight)
IF THIS.Autowidth
STORE nTextHeight TO nBaseWidth, THIS.Width
ENDIF
DO CASE
CASE THIS.Alignment = 0 && left
nX = 0
CASE THIS.Alignment = 1 && center
nX = Int((nBaseWidth - nTextHeight)/2)
CASE THIS.Alignment = 2 && right
nX = nBaseWidth - nTextHeight
ENDCASE
DO CASE
CASE THIS.VAlignment = 0 && top
nY = nTextWidth
CASE THIS.VAlignment = 1 && center
nY = nTextWidth Int((nBaseHeight - nTextWidth)/2)
CASE THIS.VAlignment = 2 && bottom
nY = nBaseHeight
ENDCASE
IF THIS.Direction <> 0
nY = nY - nTextWidth
nX = nX nTextHeight
ENDIF
IF THIS.BackColor = -1
hBrush = CreateSolidBrush(ThisForm.BackColor)
ELSE
hBrush = CreateSolidBrush(THIS.BackColor)
ENDIF
= FillRect(hMemDC, @BaseRect, hBrush)
= DeleteObject(hBrush)
= SetBkMode(hMemDC, 1) && transparent
= SetTextColor(hMemDC, THIS.ForeColor)
= TextOut(hMemDC, nX, nY, THIS.VCaption, Len(THIS.VCaption))
IF BmpToFile(hMemDC, hMemBmp,;
nBaseWidth, nBaseHeight, THIS.bitmapfile)
THIS.Picture = THIS.Bitmapfile
ENDIF
= DeleteDC(hMemDC)
= DeleteObject(hMemBmp)
= DeleteObject(hFont)
ENDDEFINE
PROCEDURE GetTextRect(hDC, cText, nTextWidth, nTextHeight)
LOCAL cBuffer
cBuffer = Repli(Chr(0), 8)
= GetTextExtentPoint32(hDC, cText, Len(cText), @cBuffer)
nTextWidth = buf2dword(SUBSTR(cBuffer, 1,4))
nTextHeight = buf2dword(SUBSTR(cBuffer, 5,4))
PROCEDURE BmpToFile(hMemDC, hMemBmp, nWidth, nHeight, cFilename)
#DEFINE cnBitsPerPixel 24
#DEFINE BHDR_SIZE 40 && BITMAPINFOHEADER
#DEFINE BFHDR_SIZE 14 && BITMAPFILEHEADER
#DEFINE GENERIC_WRITE 0x40000000
#DEFINE FILE_SHARE_WRITE 2
#DEFINE CREATE_ALWAYS 2
#DEFINE FILE_ATTRIBUTE_NORMAL 128
DECLARE INTEGER GlobalAlloc IN kernel32 INTEGER wFlags, INTEGER dwBytes
DECLARE RtlZeroMemory IN kernel32 As ZeroMemory INTEGER dst, INTEGER nBytes
DECLARE INTEGER GlobalFree IN kernel32 INTEGER hMem
DECLARE INTEGER CloseHandle IN kernel32 INTEGER hObject
DECLARE INTEGER GetDIBits IN gdi32;
INTEGER hdc, INTEGER hbmp, INTEGER uStartScan,;
INTEGER cScanLines, INTEGER lpvBits, STRING @lpbi, INTEGER uUsage
DECLARE INTEGER CreateFile IN kernel32;
STRING lpFileName, INTEGER dwDesAccess, INTEGER dwShareMode,;
INTEGER lpSecurAttr, INTEGER dwCreatDisp, INTEGER dwFlagsAndAttrs,;
INTEGER hTemplateFile
LOCAL nBytesPerScan, nBitsArray, nBitsSize, nRgbQuadSize, cBInfo,;
hFile, lnOffBits, lnFileSize, cBFileHdr
STORE 0 TO nBytesPerScan, nRgbQuadSize, nBitsArray, nBitsSize
STORE "" TO cBInfo
nBytesPerScan = nWidth * 3 && initialising bitmap data
IF Mod(nBytesPerScan, 4) <> 0
nBytesPerScan = nBytesPerScan 4 - Mod(nBytesPerScan, 4)
ENDIF
cBInfo = num2dword(BHDR_SIZE) num2dword(nWidth) num2dword(nHeight) ;
num2word(1) num2word(cnBitsPerPixel) Repli(Chr(0),24)
nBitsSize = nHeight * nBytesPerScan
nBitsArray = GlobalAlloc(0, nBitsSize)
= ZeroMemory(nBitsArray, nBitsSize)
= GetDIBits(hMemDC, hMemBmp, 0, nHeight, nBitsArray, @cBInfo, 0)
* copying created structures to bitmap file
lnFileSize = BFHDR_SIZE BHDR_SIZE nRgbQuadSize nBitsSize
lnOffBits = BFHDR_SIZE BHDR_SIZE nRgbQuadSize
cBFileHdr = "BM" num2dword(lnFileSize) ;
num2dword(0) num2dword(lnOffBits)
hFile = CreateFile(m.cFilename, GENERIC_WRITE, FILE_SHARE_WRITE, 0,;
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0)
IF hFile <> -1
= Str2File(hFile, @cBFileHdr)
= Str2File(hFile, @cBInfo)
= Ptr2File(hFile, nBitsArray, nBitsSize)
= CloseHandle (hFile)
ENDIF
= GlobalFree(nBitsArray)
PROCEDURE Str2File(hFile, cBuffer) && appending string buffer to a file
DECLARE INTEGER WriteFile IN kernel32;
INTEGER hFile, STRING @lpBuffer, INTEGER nBt2Write,;
INTEGER @lpBtWritten, INTEGER lpOverlapped
= WriteFile(hFile, @cBuffer, Len(cBuffer), 0,0)
PROCEDURE Ptr2File(hFile, nPtr, nBytes) && appending memory block to a file
DECLARE INTEGER WriteFile IN kernel32;
INTEGER hFile, INTEGER lpBuffer, INTEGER nBt2Write,;
INTEGER @lpBtWritten, INTEGER lpOverlapped
= WriteFile(hFile, nPtr, nBytes, 0,0)
FUNCTION buf2dword(lcBuffer)
RETURN Asc(SUBSTR(lcBuffer, 1,1)) ;
BitLShift(Asc(SUBSTR(lcBuffer, 2,1)), 8) ;
BitLShift(Asc(SUBSTR(lcBuffer, 3,1)), 16) ;
BitLShift(Asc(SUBSTR(lcBuffer, 4,1)), 24)
FUNCTION num2dword(lnValue)
#DEFINE m0 0x100
#DEFINE m1 0x10000
#DEFINE m2 0x1000000
IF lnValue < 0
lnValue = 0x100000000 lnValue
ENDIF
LOCAL b0, b1, b2, b3
b3 = Int(lnValue/m2)
b2 = Int((lnValue - b3*m2)/m1)
b1 = Int((lnValue - b3*m2 - b2*m1)/m0)
b0 = Mod(lnValue, m0)
RETURN Chr(b0) Chr(b1) Chr(b2) Chr(b3)
FUNCTION num2word(lnValue)
RETURN Chr(MOD(m.lnValue,256)) CHR(INT(m.lnValue/256)) 
