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Rubrik: System/Windows · Sonstiges   |   VB-Versionen: VB620.01.05
Startmenü nachbauen

Coole Effekte für Menüs anstatt des langweiligen Standard-Looks

Autor:   Martin WalcherBewertung:     [ Jetzt bewerten ]Views:  11.151 
www.martinwalcher.deSystem:  WinNT, Win2k, WinXP, Vista, Win7, Win8 Beispielprojekt auf CD 

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    Mit folgenden Code kann man ganz einfach eine "Kopie" des Startmenüs erzeugen (nicht das hässliche Dicke, sondern das klassische..). Dies gibt z.B. bei SysTray-Menüs einiges mehr her als das zierliche Windows-Standard-Menü ;)

    Der Code besteht aus zwei Teilen:

    1. Balken auf der linken Seite und
    2. Anzeige von großen Icons (24x24 Pixel)

    ACHTUNG: Die Prozedur verwendet Subclassing! Bei Programmfehlern kann die ganze IDE abschmiern!!!


    Abb.: modernes "Sidebar"-Menü

    Zur Anwendung der Funktionen muss nachfolgender Code in eine Form eingefügt werden.
    Wichtig: Das anzuzeigende Menü muss vorher über den VB-Menüeditor erstellt werden!

    Die einzelnen Bildsymbole legen Sie am besten in einem Picture-Control ab (Steuerelementfeld).

    Private Sub Form_Load()
     
      ' Erstellen der SideBar:
      ' > HWnd: handle eines Fensters
      ' > MenuID: ID des Menüs (0 = 1. Menü, 1 = 2. Menü...)
      ' --> AddSidebar HWnd, MenuID
     
      AddSidebar Me.hwnd, 0
     
      ' Änderung der SubItems:
      ' > HWnd: handle eines Fensters
      ' > MenuID siehe oben
      ' > SubID: des Menüeintrags (wie MenuID)
      '   ABER: Wenn SideBar vorhanden: SubID = SubID + 1
      ' > hdc: Handle eines Bildes (24 x 24px)
      ' --> MakeBigIcon Me.hwnd, MenuID, SubID, hdc
     
      MakeBigIcon HWnd, 0, 1, Picture1(0).hdc
      MakeBigIcon Me.hwnd, 0, 2, Picture1(1).hdc
    End Sub

    Der restliche Code kommt in ein Modul:

    Option Explicit
     
    ' Code by Martin Walcher
    ' info@martinwalcher.de
    ' http://www.martinwalcher.de/
     
    Private Declare Function GetMenu Lib "user32.dll" ( _
      ByVal hwnd As Long) As Long
     
    Private Declare Function GetSubMenu Lib "user32.dll" ( _
      ByVal hMenu As Long, _
      ByVal nPos As Long) As Long
     
    Private Declare Function ModifyMenu Lib "user32.dll" _
      Alias "ModifyMenuA" ( _
      ByVal hMenu As Long, _
      ByVal nPosition As Long, _
      ByVal wFlags As Long, _
      ByVal wIDNewItem As Long, _
      ByVal lpString As Any) As Long
     
    Private Declare Function GetMenuString Lib "user32.dll" _
      Alias "GetMenuStringA" ( _
      ByVal hMenu As Long, _
      ByVal wIDItem As Long, _
      ByVal lpString As String, _
      ByVal nMaxCount As Long, _
      ByVal wFlag As Long) As Long
     
    Private Declare Function GetMenuItemID Lib "user32.dll" ( _
      ByVal hMenu As Long, _
      ByVal nPos As Long) As Long
     
    Private Declare Function SetWindowLong Lib "user32.dll" _
      Alias "SetWindowLongA" ( _
      ByVal hwnd As Long, _
      ByVal nIndex As Long, _
      ByVal dwNewLong As Long) As Long
     
    Private Declare Function CallWindowProc Lib "user32.dll" _
      Alias "CallWindowProcA" ( _
      ByVal lpPrevWndFunc As Long, _
      ByVal hwnd As Long, _
      ByVal msg As Long, _
      ByVal wParam As Long, _
      ByVal lParam As Long) As Long
     
    Private Declare Function GetSystemMetrics Lib "user32.dll" ( _
      ByVal nIndex As Long) As Long
     
    Private Declare Function GetClipBox Lib "gdi32.dll" ( _
      ByVal hdc As Long, _
      ByRef lpRect As RECT) As Long
     
    Private Declare Function SetPixel Lib "gdi32.dll" ( _
      ByVal hdc As Long, _
      ByVal x As Long, _
      ByVal y As Long, _
      ByVal crColor As Long) As Long
     
    Private Declare Function ChangeMenu Lib "user32.dll" _
      Alias "ChangeMenuA" ( _
      ByVal hMenu As Long, _
      ByVal cmd As Long, _
      ByVal lpszNewItem As String, _
      ByVal cmdInsert As Long, _
      ByVal flags As Long) As Long
     
    Private Declare Function GetMenuState Lib "user32.dll" ( _
      ByVal hMenu As Long, _
      ByVal wID As Long, _
      ByVal wFlags As Long) As Long
     
    Private Declare Function GetSysColor Lib "user32.dll" ( _
      ByVal nIndex As Long) As Long
     
    Private Declare Function CreatePen Lib "gdi32.dll" ( _
      ByVal nPenStyle As Long, _
      ByVal nWidth As Long, _
      ByVal crColor As Long) As Long
     
    Private Declare Function CreateSolidBrush Lib "gdi32.dll" ( _
      ByVal crColor As Long) As Long
     
    Private Declare Function SelectObject Lib "gdi32.dll" ( _
      ByVal hdc As Long, _
      ByVal hObject As Long) As Long
     
    Private Declare Function DeleteObject Lib "gdi32.dll" ( _
      ByVal hObject As Long) As Long
     
    Private Declare Function Rectangle Lib "gdi32.dll" ( _
      ByVal hdc As Long, _
      ByVal X1 As Long, _
      ByVal Y1 As Long, _
      ByVal X2 As Long, _
      ByVal Y2 As Long) As Long
     
    Private Declare Function BitBlt Lib "gdi32.dll" ( _
      ByVal hDestDC As Long, _
      ByVal x As Long, _
      ByVal y As Long, _
      ByVal nWidth As Long, _
      ByVal nHeight As Long, _
      ByVal hSrcDC As Long, _
      ByVal xSrc As Long, _
      ByVal ySrc As Long, _
      ByVal dwRop As Long) As Long
     
    Private Declare Function TransparentBlt Lib "msimg32.dll" ( _
      ByVal hdc As Long, _
      ByVal x As Long, _
      ByVal y As Long, _
      ByVal nWidth As Long, _
      ByVal nHeight As Long, _
      ByVal hSrcDC As Long, _
      ByVal xSrc As Long, _
      ByVal ySrc As Long, _
      ByVal nSrcWidth As Long, _
      ByVal nSrcHeight As Long, _
      ByVal crTransparent As Long) As Long
     
    Private Declare Function SetBkMode Lib "gdi32.dll" ( _
      ByVal hdc As Long, _
      ByVal nBkMode As Long) As Long
     
    Private Declare Function SetTextColor Lib "gdi32.dll" ( _
      ByVal hdc As Long, _
      ByVal crColor As Long) As Long
     
    Private Declare Function TextOut Lib "gdi32.dll" _
      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 Sub CopyMemory Lib "kernel32.dll" _
      Alias "RtlMoveMemory" ( _
      ByRef Destination As Any, _
      ByRef Source As Any, _
      ByVal Length As Long)
     
    Private Const MF_BYPOSITION As Long = &H400&
    Private Const MF_MENUBREAK As Long = &H40&
    Private Const MF_DISABLED As Long = &H2&
    Private Const MF_GRAYED As Long = &H1&
    Private Const MF_OWNERDRAW As Long = &H100&
    Private Const WM_MEASUREITEM As Long = &H2C&
    Private Const WM_DRAWITEM As Long = &H2B&
    Private Const SM_CXMENUCHECK As Long = &H47&
    Private Const GWL_WNDPROC As Long = -4
    Private Const COLOR_MENU As Long = 4
    Private Const COLOR_MENUTEXT As Long = 7
    Private Const COLOR_HIGHLIGHT As Long = 13
    Private Const COLOR_HIGHLIGHTTEXT As Long = 14
    Private Const PS_SOLID As Long = 0
    Private Const SRCCOPY As Long = &HCC0020
    Private Const TRANSPARENT As Long = 1
     
    Private Type RECT
      Left As Long
      Top As Long
      Right As Long
      Bottom As Long
    End Type
     
    Private Type MEASUREITEMSTRUCT
      CtlType As Long
      CtlID As Long
      itemID As Long
      itemWidth As Long
      itemHeight As Long
      itemData As Long
    End Type
     
    Private Type DRAWITEMSTRUCT
      CtlType As Long
      CtlID As Long
      itemID As Long
      itemAction As Long
      itemState As Long
      hwndItem As Long
      hdc As Long
      rcItem As RECT
      itemData As Long
    End Type
     
    Dim oldProc As Long
    Public Function AddSidebar(ByVal hwnd As Long, ByVal MenuNr As Long) As Boolean
      Dim m As Long, s As String
     
      SetProc hwnd
     
      m = GetSubMenu(GetMenu(hwnd), MenuNr)
      If m = 0 Then Exit Function
     
      ChangeMenu m, 0, "", 0, MF_BYPOSITION
      ModifyMenu m, 0, MF_BYPOSITION Or MF_OWNERDRAW Or _
        MF_DISABLED Or MF_GRAYED, GetMenuItemID(m, 0), -1&
     
      s = Space(128)
      GetMenuString m, 1, s, Len(s), MF_BYPOSITION
      s = Left(s, InStr(s & Chr(0), Chr(0)) - 1)
     
      ModifyMenu m, 1, GetMenuState(m, 1, MF_BYPOSITION) Or _
        MF_BYPOSITION Or MF_MENUBREAK, GetMenuItemID(m, 1), s
     
      AddSidebar = True
    End Function
    Public Function MakeBigIcon(ByVal hwnd As Long, ByVal MenuNr As Long, _
      ByVal MenuPos As Long, ByVal iconhdc As Long) As Boolean
     
      Dim m As Long, s As String
     
      SetProc hwnd
     
      m = GetSubMenu(GetMenu(hwnd), MenuNr)
      If m = 0 Then Exit Function
     
      If iconhdc = -1 Then iconhdc = 0
      ModifyMenu m, MenuPos, GetMenuState(m, MenuPos, MF_BYPOSITION) Or _
        MF_BYPOSITION Or MF_OWNERDRAW, GetMenuItemID(m, MenuPos), iconhdc
     
      MakeBigIcon = True
    End Function
    Private Sub SetProc(ByVal hwnd As Long)
      If oldProc = 0 Then oldProc = SetWindowLong(hwnd, GWL_WNDPROC, AddressOf NewProc)
    End Sub
    Public Sub DelProc(ByVal hwnd As Long)
      SetWindowLong hwnd, GWL_WNDPROC, oldProc
      oldProc = 0
    End Sub
    Private Function NewProc(ByVal hwnd As Long, ByVal msg As Long, _
      ByVal wParam As Long, ByVal lParam As Long) As Long
     
      Dim mis As MEASUREITEMSTRUCT
      Dim dis As DRAWITEMSTRUCT
      Dim tmp As Long
      Dim x As Long
      Dim y As Long
      Dim bc As Long
      Dim fc As Long
      Dim hp As Long
      Dim hb As Long, s As String
     
      Select Case msg
        Case WM_MEASUREITEM
          CopyMemory ByVal VarPtr(mis), ByVal lParam, Len(mis)
          If mis.itemData = -1 Then
            mis.itemWidth = 21 - GetSystemMetrics(SM_CXMENUCHECK) - 3
            mis.itemHeight = 0
          Else
            mis.itemHeight = 32
            mis.itemWidth = 150
          End If
          CopyMemory ByVal lParam, ByVal VarPtr(mis), Len(mis)
     
        Case WM_DRAWITEM
          CopyMemory ByVal VarPtr(dis), ByVal lParam, Len(dis)
     
          If dis.itemData = -1 Then
            GetClipBox dis.hdc, dis.rcItem
            tmp = dis.rcItem.Bottom - dis.rcItem.Top
            For y = 0 To tmp
              For x = 0 To 20
                SetPixel dis.hdc, x, y, Round(y / tmp * 255) * 256
              Next
            Next
     
          Else
            Select Case dis.itemState And 1
              Case 1 ' Selected
                bc = GetSysColor(COLOR_HIGHLIGHT)
                fc = GetSysColor(COLOR_HIGHLIGHTTEXT)
              Case 0 ' Not Selected
                bc = GetSysColor(COLOR_MENU)
                fc = GetSysColor(COLOR_MENUTEXT)
            End Select
     
            hp = CreatePen(PS_SOLID, 0, bc)
            hb = CreateSolidBrush(bc)
            SelectObject dis.hdc, hp
            SelectObject dis.hdc, hb
            Rectangle dis.hdc, dis.rcItem.Left, dis.rcItem.Top, _
              dis.rcItem.Right, dis.rcItem.Bottom
            DeleteObject hb
            DeleteObject hp
     
            TransparentBlt dis.hdc, dis.rcItem.Left + 4, dis.rcItem.Top + 4, _
              24, 24, dis.itemData, 0, 0, 24, 24, &HFF00FF   ' &HC8D0D4
     
            SetBkMode dis.hdc, TRANSPARENT
            SetTextColor dis.hdc, fc
            s = Space(64)
            GetMenuString GetMenu(hwnd), dis.itemID, s, Len(s), 0
            s = Left(s, InStr(s & Chr(0), Chr(0)) - 1)
            TextOut dis.hdc, dis.rcItem.Left + 40, dis.rcItem.Top + _
              (dis.rcItem.Bottom - dis.rcItem.Top) / 2 - 12 / 2, s, Len(s)
          End If
      End Select
     
      NewProc = CallWindowProc(oldProc, hwnd, msg, wParam, lParam)
    End Function

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