原理 由于windows自身并未提供这项接口函数，因此我们必须从分析菜单的实质入手，我认为任何菜单实质上是一个没有标题栏的窗体，菜单项目是某些控件（如标签控件），通过监测鼠标是否移动到控件上而相应的改变控件的背景色和填充色，从而达到相应的目的，当然另外一项关键是如何制造出那一个倒立着的写着“windows98”字样的标题，这需要我们调用复杂的系统函数来实现。 实践 （1）运行vb6，建立一个标准exe工程，添加命名为form1的窗体，放上一个command控件“command1”，caption=“开始”，调整到适当的位置,双击窗体，写入以下代码： Private Sub Command1_Click() frmTest.Show ‘当开始按钮被点击时激活超级菜单 End Sub Private Sub Form_Load() Me.left = (Screen.Width － Me.Width) / 2 Me.tOp = (Screen.Height － Me.Height) / 2 ‘窗体位置居中 End Sub Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single) If frmTest.Visible = True Then Unload frmTest End If ‘当鼠标离开菜单时卸载菜单 End Sub Private Sub Form_Unload(Cancel As Integer) End ‘结束程序 End Sub （2） 添加命名为frmtest的窗体，添加一个picturebox控件，命名为piclogo，采用默认值就行了，添加控件数组label1（1－－6）（读者可以根据自己的需要添加）,caption=“菜单项目”，添加一个image控件，将它的图片设计为自己喜欢的图片，移动窗体和图片到适当位置，双击窗体，写入以下代码： Option Explicit Dim cL As New cLogo ‘引用类模块 Private Sub Form_Load() Me.left = Form1.left Me.tOp = Form1.tOp － Form1.Height ‘指定窗体位置 Me.Caption = App.Title ‘窗体标题 cL.DrawingObject = picLogo ‘指定piclogo为载体 cL.Caption = ″ 欢迎使用国产软件! －－zouhero 2000 ″‘文本 cL.StartColor = vbBlue ‘前段颜色－蓝色 cL.EndColor = vbRed ‘后段颜色－红色 End Sub Private Sub Form_Resize() On Error Resume Next picLogo.Height = Me.ScaleHeight cL.Draw End Sub Private Sub Label1_Click(Index As Integer) MsgBox ″你选择了菜单″ ＆ Index, vbExclamation ’在这里添加你的相应代码 End Sub Private Sub Label1_MouseMove(Index As Integer, Button As Integer, Shift As Integer, X As Single, Y As Single) Dim i As Integer ‘当鼠标移动标签控件时，前景色变成白色，背景色变成蓝色 Label1(Index).BackColor = vbBlue Label1(Index).ForeColor = ＆HFFFFFF For i = 0 To Label1.Count － 1 ‘其他标签颜色恢复原状 If i = Index Then GoTo aa Label1(i).BackColor = vbButtonFace Label1(i).ForeColor = ＆H0 aa: Next ‘恢复除选定标签外的所有标签的前景色和背景色 End Sub ‘代码结束 （3）选择“工程”菜单－“添加类模块”，命名为clogo，写入以下代码： Option Explicit ’以下是令人眼花缭乱的win api引用 Private Type RECT left As Long tOp As Long Right As Long Bottom As Long End Type Private Declare Function FillRect Lib ″user32″ (ByVal hDC As Long, lpRect As RECT, ByVal hBrush As Long) As Long Private Declare Function CreateSolidBrush Lib ″gdi32″ (ByVal crColor As Long) As Long Private Declare Function TextOut Lib ″gdi32″ Alias ″TextOutA″ (ByVal hDC As Long, ByVal x As Long, ByVal y As Long, ByVal lpString As String, ByVal nCount As Long) As Long Private Declare Function GetDeviceCaps Lib ″gdi32″ (ByVal hDC As Long, ByVal nIndex As Long) As Long Private Const LOGPIXELSX = 88 Private Const LOGPIXELSY = 90 Private Declare Function MulDiv Lib ″kernel32″ (ByVal nNumber As Long, ByVal nNumerator As Long, ByVal nDenominator As Long) As Long Private Const LF_FACESIZE = 32 Private Type LOGFONT lfHeight As Long lfWidth As Long lfEscapement As Long lfOrientation As Long lfWeight As Long lfItalic As Byte lfUnderline As Byte lfStrikeOut As Byte lfCharSet As Byte lfOutPrecision As Byte lfClipPrecision As Byte lfQuality As Byte lfPitchAndFamily As Byte lfFaceName(LF_FACESIZE) As Byte End Type Private Declare Function CreateFontIndirect Lib ″gdi32″ Alias ″CreateFontIndirectA″ (lpLogFont As LOGFONT) As Long Private Declare Function SelectObject Lib ″gdi32″ (ByVal hDC As Long, ByVal hObject As Long) As Long Private Declare Function DeleteObject Lib ″gdi32″ （ByVal hObject As Long) As Long Private Const FW_NORMAL = 400 Private Const FW_BOLD = 700 Private Const FF_DONTCARE = 0 Private Const DEFAULT_QUALITY = 0 Private Const DEFAULT_PITCH = 0 Private Const DEFAULT_CHARSET = 1 Private Declare Function OleTranslateColor Lib ″OLEPRO32.DLL″ (ByVal OLE_COLOR As Long, ByVal HPALETTE As Long, pccolorref As Long) As Long Private Const CLR_INVALID = －1 Private m_picThis As PictureBox Private m_sCaption As String Private m_bRGBStart(1 To 3) As Integer Private m_oStartColor As OLE_COLOR Private m_bRGBEnd(1 To 3) As Integer Private m_oEndColor As OLE_COLOR ’api声明结束 ’以下代码建立建立类模块的出入口函数 Public Property Let Caption(ByVal sCaption As String) ’ m_sCaption = sCaption End Property Public Property Get Caption() As String ’标题栏文字 Caption = m_sCaption End Property Public Property Let DrawingObject(ByRef picThis As PictureBox)‘指定目标图片 Set m_picThis = picThis End Property Public Property Get StartColor() As OLE_COLOR ‘StartColor = m_oStartColor End Property Public Property Let StartColor(ByVal oColor As OLE_COLOR) ‘指定前段颜色 Dim lColor As Long If (m_oStartColor <> oColor) Then m_oStartColor = oColor OleTranslateColor oColor, 0, lColor m_bRGBStart(1) = lColor And ＆HFF＆ m_bRGBStart(2) = ((lColor And ＆HFF00＆) / ＆H100) m_bRGBStart(3) = ((lColor And ＆HFF0000) / ＆H10000) If Not (m_picThis Is Nothing) Then Draw End If End If End Property Public Property Get EndColor() As OLE_COLOR EndColor = m_oEndColor End Property Public Property Let EndColor(ByVal oColor As OLE_COLOR) ‘指定后段颜色 Dim lColor As Long If (m_oEndColor <> oColor) Then m_oEndColor = oColor OleTranslateColor oColor, 0, lColor m_bRGBEnd(1) = lColor And ＆HFF＆ m_bRGBEnd(2) = ((lColor And ＆HFF00＆) / ＆H100) m_bRGBEnd(3) = ((lColor And ＆HFF0000) / ＆H10000) If Not (m_picThis Is Nothing) Then Draw End If End If End Property Public Sub Draw() ‘画背景颜色 Dim lHeight As Long, lWidth As Long Dim lYStep As Long Dim lY As Long Dim bRGB(1 To 3) As Integer Dim tLF As LOGFONT Dim hFnt As Long Dim hFntOld As Long Dim lR As Long Dim rct As RECT Dim hBr As Long Dim hDC As Long Dim dR(1 To 3) As Double On Error GoTo DrawError hDC = m_picThis.hDC lHeight = m_picThis.Height / Screen.TwipsPerPixelY rct.Right = m_picThis.Width / Screen.TwipsPerPixelY lYStep = lHeight / 255 If (lYStep = 0) Then lYStep = 1 End If rct.Bottom = lHeight bRGB(1) = m_bRGBStart(1) bRGB(2) = m_bRGBStart(2) bRGB(3) = m_bRGBStart(3) dR(1) = m_bRGBEnd(1) － m_bRGBStart(1) dR(2) = m_bRGBEnd(2) － m_bRGBStart(2) dR(3) = m_bRGBEnd(3) － m_bRGBStart(3) For lY = lHeight To 0 Step －lYStep rct.tOp = rct.Bottom － lYStep hBr = CreateSolidBrush((bRGB(3) ＊ ＆H10000 ＋ bRGB(2) ＊ ＆H100＆ ＋ bRGB(1))) FillRect hDC, rct, hBr DeleteObject hBr rct.Bottom = rct.tOp bRGB(1) = m_bRGBStart(1) ＋ dR(1) ＊ (lHeight － lY) / lHeight bRGB(2) = m_bRGBStart(2) ＋ dR(2) ＊ (lHeight － lY) / lHeight bRGB(3) = m_bRGBStart(3) ＋ dR(3) ＊ (lHeight － lY) / lHeight Next lY pOLEFontToLogFont m_picThis.Font, hDC, tLF tLF.lfEscapement = 900 hFnt = CreateFontIndirect(tLF) If (hFnt <> 0) Then hFntOld = SelectObject(hDC, hFnt) lR = TextOut(hDC, 0, lHeight － 16, m_sCaption, Len(m_sCaption)) SelectObject hDC, hFntOld DeleteObject hFnt End If m_picThis.Refresh Exit Sub DrawError: Debug.Print ″Problem: ″ ＆ Err.Description End Sub Private Sub pOLEFontToLogFont(fntThis As StdFont, hDC As Long, tLF As LOGFONT) ‘文字字体 Dim sFont As String Dim iChar As Integer With tLF sFont = fntThis.Name For iChar = 1 To Len(sFont) .lfFaceName(iChar － 1) =CByte(Asc(Mid＄(sFont, iChar, 1))) Next iChar .lfHeight = －MulDiv((fntThis.Size), (GetDeviceCaps(hDC, LOGPIXELSY)), 72) .lfItalic = fntThis.Italic If (fntThis.Bold) Then .lfWeight = FW_BOLD Else .lfWeight = FW_NORMAL End If .lfUnderline = fntThis.Underline .lfStrikeOut = fntThis.Strikethrough End With End Sub Private Sub Class_Initialize() StartColor = ＆H0 EndColor = vbButtonFace End Sub ‘模块定义结束
