转载一位 homezj 大虾的制作的 ToolBar 工具栏控件但是不明白怎么封装,怎么用这个类?具体一点谢谢原文如下: (一)
MS的ToolBar是是最容易找到找的工具栏控件了,简单方便实用,但它的缺点也是明显的,样式古板,与这个时代有点不合拍。为解决这个问题,我专门写了一个类。
其实ToolBar提供了一个CustomDraw功能,MS为你已搭好了ToolBar的框架,只是ToolBar的模样交给你自己绘,很简单地,就可以用任意你想要的模样,使用ToolBar的所有功能,这比自己做ToolBar是不是更容易更方便?
该功能当然是通过消息机制触发,其核心就是通过WM_NOTIFY消息,这个消息的lParam参数,就是指向一个NMHDR结构的地址,通过NMHDR 结构,我们可得知产生消息的hwnd等信息,确定控件类型,并进一步决定整个结构的类型是什么,进而获得NMCUSTOMDRAW和 NMTBCUSTOMDRAW结构,NMTBCUSTOMDRAW最前面就是NMCUSTOMDRAW,而NMCUSTOMDRAW最前面就是 NMHDR,所以一个NMHDR、NMCUSTOMDRAW,NMCUSTOMDRAW实际上都是同一个地址lParam,只是需根据前面信息,最终确定整个结构的长度而已。 WM_LBUTTONDOWN、WM_LBUTTONUP消息本应与本类无关,只是ToolBar中带菜单的样式的按钮,我一时不知如何获取其Drap消息,所以被迫采用了判断鼠标动作的权宜之计,不知哪位能把这个改改。 DrawToolbarButton过程是改变按钮样式的核心内容,在这部分下下功夫,就可以做出自己理想的ToolBar了'测试窗体中的代码:需有个ToolBar,最好有ImageList。
Option Explicit
Private Sub Command1_Click()
Dim i As Long
With oTbr
Randomize
'If .BackPicture = "" Then
' .BackPicture = "e:\12.jpg"
'Else
' .BackPicture = ""
'End If
.BorderColor = vbBlue '只有BorderStyle大于3时才有效
.BackColor = Rnd * (2 ^ 24)
.TextColor = Rnd * (2 ^ 24)
.TextHiColor = Rnd * (2 ^ 24)
i = .BorderStyle + 1
If i > 4 Then i = 0
.BorderStyle = i '取值范围0-4
End With
End Sub
Private Sub Command2_Click()
If oTbr Is Nothing Then
Set oTbr = New cToolbar
With oTbr
.BindToolBar Toolbar1.hWnd
End With
Command2.Caption = "取消样式"
Command1.Enabled = True
Else
Set oTbr = Nothing
Toolbar1.Refresh
Command2.Caption = "加载样式"
Command1.Enabled = False
End If
End Sub
Private Sub Form_Load()
Command1.Caption = "随机变样"
Command2.Caption = "加载样式"
Command2.Enabled = True
Command1.Enabled = False
End SubPrivate Sub Form_Unload(Cancel As Integer)
Set oTbr = Nothing
End Sub
--------------------------------------------------
--------------------------------------------------
'标准模块中的代码:
Option Explicit
Public oTbr As cToolbar
Public OldWindowProc As Long
Private Const WM_NOTIFY As Long = &H4E
Private Const WM_LBUTTONDOWN = &H201
Private Const WM_LBUTTONUP = &H202
Private Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Public Function TBSubClass(ByVal hWnd As Long, ByVal Msg As Long, ByVal wp As Long, ByVal lp As Long) As Long
Dim ProcOK As Long
Static MouseDown As Boolean
If Msg = WM_NOTIFY Then
ProcOK = oTbr.MsgProc(lp, MouseDown)
ElseIf Msg = WM_LBUTTONDOWN Then
MouseDown = True
ElseIf Msg = WM_LBUTTONUP Then
MouseDown = False
End If
If ProcOK Then
TBSubClass = ProcOK
Else
TBSubClass = CallWindowProc(OldWindowProc, hWnd, Msg, wp, lp)
End If
End Function
MS的ToolBar是是最容易找到找的工具栏控件了,简单方便实用,但它的缺点也是明显的,样式古板,与这个时代有点不合拍。为解决这个问题,我专门写了一个类。
其实ToolBar提供了一个CustomDraw功能,MS为你已搭好了ToolBar的框架,只是ToolBar的模样交给你自己绘,很简单地,就可以用任意你想要的模样,使用ToolBar的所有功能,这比自己做ToolBar是不是更容易更方便?
该功能当然是通过消息机制触发,其核心就是通过WM_NOTIFY消息,这个消息的lParam参数,就是指向一个NMHDR结构的地址,通过NMHDR 结构,我们可得知产生消息的hwnd等信息,确定控件类型,并进一步决定整个结构的类型是什么,进而获得NMCUSTOMDRAW和 NMTBCUSTOMDRAW结构,NMTBCUSTOMDRAW最前面就是NMCUSTOMDRAW,而NMCUSTOMDRAW最前面就是 NMHDR,所以一个NMHDR、NMCUSTOMDRAW,NMCUSTOMDRAW实际上都是同一个地址lParam,只是需根据前面信息,最终确定整个结构的长度而已。 WM_LBUTTONDOWN、WM_LBUTTONUP消息本应与本类无关,只是ToolBar中带菜单的样式的按钮,我一时不知如何获取其Drap消息,所以被迫采用了判断鼠标动作的权宜之计,不知哪位能把这个改改。 DrawToolbarButton过程是改变按钮样式的核心内容,在这部分下下功夫,就可以做出自己理想的ToolBar了'测试窗体中的代码:需有个ToolBar,最好有ImageList。
Option Explicit
Private Sub Command1_Click()
Dim i As Long
With oTbr
Randomize
'If .BackPicture = "" Then
' .BackPicture = "e:\12.jpg"
'Else
' .BackPicture = ""
'End If
.BorderColor = vbBlue '只有BorderStyle大于3时才有效
.BackColor = Rnd * (2 ^ 24)
.TextColor = Rnd * (2 ^ 24)
.TextHiColor = Rnd * (2 ^ 24)
i = .BorderStyle + 1
If i > 4 Then i = 0
.BorderStyle = i '取值范围0-4
End With
End Sub
Private Sub Command2_Click()
If oTbr Is Nothing Then
Set oTbr = New cToolbar
With oTbr
.BindToolBar Toolbar1.hWnd
End With
Command2.Caption = "取消样式"
Command1.Enabled = True
Else
Set oTbr = Nothing
Toolbar1.Refresh
Command2.Caption = "加载样式"
Command1.Enabled = False
End If
End Sub
Private Sub Form_Load()
Command1.Caption = "随机变样"
Command2.Caption = "加载样式"
Command2.Enabled = True
Command1.Enabled = False
End SubPrivate Sub Form_Unload(Cancel As Integer)
Set oTbr = Nothing
End Sub
--------------------------------------------------
--------------------------------------------------
'标准模块中的代码:
Option Explicit
Public oTbr As cToolbar
Public OldWindowProc As Long
Private Const WM_NOTIFY As Long = &H4E
Private Const WM_LBUTTONDOWN = &H201
Private Const WM_LBUTTONUP = &H202
Private Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Public Function TBSubClass(ByVal hWnd As Long, ByVal Msg As Long, ByVal wp As Long, ByVal lp As Long) As Long
Dim ProcOK As Long
Static MouseDown As Boolean
If Msg = WM_NOTIFY Then
ProcOK = oTbr.MsgProc(lp, MouseDown)
ElseIf Msg = WM_LBUTTONDOWN Then
MouseDown = True
ElseIf Msg = WM_LBUTTONUP Then
MouseDown = False
End If
If ProcOK Then
TBSubClass = ProcOK
Else
TBSubClass = CallWindowProc(OldWindowProc, hWnd, Msg, wp, lp)
End If
End Function
Option Explicit
Private Const CDDS_ITEM As Long = &H10000
Private Const CDDS_PREPAINT As Long = &H1
Private Const CDDS_ITEMPREPAINT As Long = (CDDS_ITEM Or CDDS_PREPAINT)
Private Const CDRF_SKIPDEFAULT As Long = &H4
Private Const CDRF_NOTIFYITEMDRAW As Long = &H20
Private Const CDIS_CHECKED As Long = &H8
Private Const CDIS_DISABLED As Long = &H4
Private Const CDIS_HOT As Long = &H40
Private Const CDIS_SELECTED As Long = &H1
Private Const GWL_WNDPROC = (-4)
Private Const WM_USER As Long = &H400
Private Const TB_GETBUTTONTEXTA As Long = (WM_USER + 45)
Private Const TB_GETIMAGELIST As Long = (WM_USER + 49)
Private Const TB_GETHOTIMAGELIST = (WM_USER + 53)
Private Const TB_GETDISABLEDIMAGELIST = (WM_USER + 55)
Private Const TB_GETBITMAP As Long = (WM_USER + 44)
Private Const TB_COMMANDTOINDEX As Long = (WM_USER + 25)
Private Const TB_GETBUTTON As Long = (WM_USER + 23)
Private Const TBSTYLE_LIST As Long = &H1000
Private Const TBSTYLE_SEP As Long = &H1
Private Const TBSTYLE_DROPDOWN As Long = &H8
Private Const ILD_NORMAL As Long = &H0
Private Const DST_TEXT = &H1&
Private Const DST_ICON As Long = &H3
Private Const DSS_DISABLED = &H20&
Private Const CLR_NONE As Long = &HFFFFFFFF
Private Const GWL_STYLE As Long = -16
Private Const PS_SOLID As Long = 0
Private Const TA_LEFT = 0
Private Const TA_RIGHT = 2
Private Const TA_CENTER = 6
Private Const BF_FLAT = &H4000
Private Const BF_BOTTOM = &H8
Private Const BF_LEFT = &H1
Private Const BF_RIGHT = &H4
Private Const BF_TOP = &H2
Private Const BF_RECT = (BF_LEFT Or BF_TOP Or BF_RIGHT Or BF_BOTTOM)
Private Const BDR_RAISEDOUTER = &H1
Private Const BDR_RAISEDINNER = &H4
Private Const BDR_SUNKENINNER = &H8
Private Const BDR_SUNKENOUTER = &H2
Private Const BDR_OUTER = &H3
Private Const EDGE_ETCHED = (BDR_SUNKENOUTER Or BDR_RAISEDINNER)
Private Const EDGE_RAISED = (BDR_RAISEDOUTER Or BDR_RAISEDINNER)
Private Const EDGE_SUNKEN = (BDR_SUNKENOUTER Or BDR_SUNKENINNER)
Private Type BITMAP
bmType As Long
bmWidth As Long
bmHeight As Long
bmWidthBytes As Long
bmPlanes As Integer
bmBitsPixel As Integer
bmBits As Long
End Type
Private Type ICONINFO
fIcon As Long
xHotspot As Long
yHotspot As Long
hbmMask As Long
hbmColor As Long
End Type
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Type POINTL
X As Long
Y As Long
End Type
Private Type Size
cx As Long
cy As Long
End Type
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 As String * 32
End Type
Private Type TBBUTTON
iBitmap As Long
idCommand As Long
fsState As Byte
fsStyle As Byte
bReserved(1) As Byte
dwData As Long
iString As Long
End Type
Private Type MemHdc
hdc As Long
Bmp As Long
obm As Long
End Type
Private Type NMHDR
hwndFrom As Long
idfrom As Long
code As Long
End Type
Private Type NMCUSTOMDRAW
hdr As NMHDR
dwDrawStage As Long
hdc As Long
rc As RECT
dwItemSpec As Long
uItemState As Long
lItemlParam As Long
End Type
Private Type NMTBCUSTOMDRAW
nmcd As NMCUSTOMDRAW
hbrMonoDither As Long
hbrLines As Long
hpenLines As Long
clrText As Long
clrMark As Long
clrTextHighlight As Long
clrBtnFace As Long
clrBtnHighlight As Long
clrHighlightHotTrack As Long
rcText As RECT
nStringBkMode As Long
nHLStringBkMode As Long
End Type
Private m_hWnd As Long
Private m_lngBackColor As Long
Private m_lngBrdStyle As Long
Private m_lngTextColor As Long
Private m_lngTextHiColor As Long
Private m_strBkPicture As String
Private m_lngBrdColor As LongPrivate mpicBk As StdPicture
Private mlngImgList As Long
Private mdcWhite As MemHdc
Private mlngHotImgList As Long
Private mlngDsbImgList As Long
Private mlngBtnHiAlpha As Long
Private mlngBtnDownAlpha As Long
Private mlngIconWidth As Long
Private mlngIconHeight As Long
Private Font As LOGFONT
'消息与管理类
Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function ShowWindow Lib "user32" Alias "ShowWindowAsync" (ByVal hWnd As Long, ByVal nCmdShow As Long) As Long
Private Declare Function GetWindowLong Lib "user32.dll" Alias "GetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal hWnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32.dll" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
'GDI对象类
Private Declare Function CreateSolidBrush Lib "gdi32.dll" (ByVal crColor 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 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 DestroyIcon Lib "user32.dll" (ByVal hIcon As Long) As Long
Private Declare Function DeleteObject Lib "gdi32.dll" (ByVal hObject As Long) As Long
Private Declare Function GetIconInfo Lib "user32" (ByVal hIcon As Long, piconinfo As ICONINFO) As Long
Private Declare Function GetObj Lib "gdi32" Alias "GetObjectA" (ByVal hObject As Long, ByVal nCount As Long, lpObject As Any) As Long
Private Declare Function CreatePatternBrush Lib "gdi32" (ByVal hBitmap As Long) As Long
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function GetDC Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hWnd As Long, ByVal hdc As Long) As Long
'区域、绘图、文本类
Private Declare Function GetClientRect Lib "user32.dll" (ByVal hWnd As Long, lpRect As RECT) As Long
Private Declare Function SetRect Lib "user32.dll" (lpRect As RECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function FillRect Lib "user32.dll" (ByVal hdc As Long, lpRect As RECT, ByVal hBrush As Long) As Long
Private Declare Function Polygon Lib "gdi32" (ByVal hdc As Long, lpPoint As POINTL, ByVal nCount As Long) As Long
Private Declare Function DrawEdge Lib "user32" (ByVal hdc As Long, qrc As RECT, ByVal edge As Long, ByVal grfFlags As Long) As Long
Private Declare Function FrameRect Lib "user32" (ByVal hdc As Long, lpRect As RECT, ByVal hBrush As Long) As Long
Private Declare Function MoveToEx Lib "gdi32.dll" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long, lpPoint As Any) As Long
Private Declare Function LineTo Lib "gdi32.dll" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long) As Long
Private Declare Function lstrlen Lib "kernel32" Alias "lstrlenA" (ByVal lpString As String) As Long
Private Declare Function GetTextExtentPoint32 Lib "gdi32" Alias "GetTextExtentPoint32A" (ByVal hdc As Long, ByVal lpsz As String, ByVal cbString As Long, lpSize As Size) As Long
Private Declare Function SetTextAlign Lib "gdi32" (ByVal hdc As Long, ByVal wFlags As Long) As Long
Private Declare Function SetBkMode Lib "gdi32" (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" 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 DrawState Lib "user32.dll" Alias "DrawStateA" (ByVal hdc As Long, ByVal hBrush As Long, ByVal lpDrawStateProc As Long, ByVal hIco As Long, ByVal wParam As Long, ByVal n1 As Long, ByVal n2 As Long, ByVal n3 As Long, ByVal n4 As Long, ByVal un As Long) As Long
Private Declare Function AlphaBlend Lib "msimg32.dll" (ByVal hdcDest As Long, ByVal nXOriginDest As Long, ByVal nYOriginDest As Long, ByVal nWidthDest As Long, ByVal hHeightDest As Long, ByVal hdcSrc As Long, ByVal nXOriginSrc As Long, ByVal nYOriginSrc As Long, ByVal nWidthSrc As Long, ByVal nHeightSrc As Long, ByVal blendFunction As Long) As Long
Private Declare Function RedrawWindow Lib "user32" (ByVal hWnd As Long, lprcUpdate As RECT, ByVal hrgnUpdate As Long, ByVal fuRedraw As Long) As Long
'ImageList类
Private Declare Function ImageList_Draw Lib "comctl32.dll" (ByVal himl As Long, ByVal i As Long, ByVal hdcDst As Long, ByVal X As Long, ByVal Y As Long, ByVal fStyle As Long) As Long
Private Declare Function ImageList_GetBkColor Lib "comctl32.dll" (ByVal himl As Long) As Long
Private Declare Function ImageList_SetBkColor Lib "comctl32.dll" (ByVal himl As Long, ByVal clrBk As Long) As Long
Private Declare Function ImageList_GetIcon Lib "comctl32.dll" (ByVal himl As Long, ByVal i As Long, ByVal flags As Long) As Long
'类中的各种属性与方法,主要用于外部调用
Friend Property Let BorderColor(ByVal vData As Long)
If m_lngBrdColor <> vData Then
m_lngBrdColor = vData
If m_lngBrdStyle > 3 Then Refresh
End If
End Property
Friend Property Get BorderColor() As Long
BorderColor = m_lngBrdColor
End Property
Friend Property Let BackPicture(ByVal vData As String)
If vData <> "" And Dir(vData) <> "" Then
If LCase(m_strBkPicture) <> LCase(vData) Then
m_strBkPicture = vData
Set mpicBk = LoadPicture(m_strBkPicture)
Refresh
End If
Else
Set mpicBk = Nothing
m_strBkPicture = ""
End If
End Property
Friend Property Get BackPicture() As String
BackPicture = m_strBkPicture
End Property
Friend Property Let FontName(ByVal vData As String)
Dim s As String, i As Long
vData = Trim(vData)
s = StrConv(Font.lfFaceName, vbUnicode)
i = InStr(1, s, Chr(0))
If i > 0 Then
s = Left$(s, i - 1)
End If
If s <> vData Then
CopyMemory Font.lfFaceName(0), ByVal vData, lstrlen(vData)
Refresh
End If
End Property
Friend Property Get FontName() As String
Dim s As String, i As Long
s = StrConv(Font.lfFaceName, vbUnicode)
i = InStr(1, s, Chr(0) - 1)
If i > 0 Then
FontName = Left$(s, i - 1)
Else
FontName = s
End If
End PropertyFriend Property Let FontUnderline(ByVal vData As Boolean)
Dim i As Long
i = IIf(vData, 1, 0)
If Font.lfUnderline <> i Then
Font.lfUnderline = i
Refresh
End If
End Property
Friend Property Get FontUnderline() As Boolean
FontUnderline = (Font.lfUnderline = 1)
End Property
Friend Property Let FontItalic(ByVal vData As Boolean)
Dim i As Long
i = IIf(vData, 1, 0)
If Font.lfItalic <> i Then
Font.lfItalic = i
Refresh
End If
End Property
Friend Property Get FontItalic() As Boolean
FontItalic = (Font.lfItalic = 1)
End Property
Friend Property Let FontBold(ByVal vData As Boolean)
Dim i As Long
i = IIf(vData, 700, 400)
If Font.lfWeight <> i Then
Font.lfWeight = i
Refresh
End If
End Property
Friend Property Get FontBold() As Boolean
FontBold = (Font.lfWeight = 700)
End Property
Friend Property Let FontSize(ByVal vData As Long)
If Font.lfHeight <> vData And vData >= 7 And vData <= 16 Then
Font.lfHeight = vData
Font.lfWidth = 0
Refresh
End If
End Property
Friend Property Get FontSize() As Long
FontSize = Font.lfHeight
End Property
Friend Property Let BorderStyle(ByVal vData As Long)
If m_lngBrdStyle <> vData Then
m_lngBrdStyle = vData
Refresh
End If
End Property
Friend Property Get BorderStyle() As Long
BorderStyle = m_lngBrdStyle
End Property
Friend Property Let TextHiColor(ByVal vData As Long)
m_lngTextHiColor = vData
End Property
Friend Property Get TextHiColor() As Long
TextHiColor = m_lngTextHiColor
End Property
Friend Property Let TextColor(ByVal vData As Long)
If m_lngTextColor <> vData Then
m_lngTextColor = vData
Refresh
End If
End Property
Friend Property Get TextColor() As Long
TextColor = m_lngTextColor
End Property
Friend Property Let BackColor(ByVal vData As Long)
If m_lngBackColor <> vData Then
m_lngBackColor = vData
If mpicBk Is Nothing Then Refresh
End If
End Property
Friend Property Get BackColor() As Long
BackColor = m_lngBackColor
End Property
Friend Sub BindToolBar(ByVal hWnd As Long)
If m_hWnd = 0 Then
m_hWnd = hWnd
If m_hWnd Then
OldWindowProc = GetWindowLong(m_hWnd, GWL_WNDPROC)
SetWindowLong m_hWnd, GWL_WNDPROC, AddressOf TBSubClass
End If
Refresh
End If
End Sub
Private Sub Class_Initialize()
Dim rc As RECT, hBrush As Long, i As Long
m_lngTextColor = vbBlack
m_lngTextHiColor = vbRed
m_lngBackColor = &HD7E9EB
m_lngBrdColor = &H0
mlngBtnHiAlpha = 96
mlngBtnDownAlpha = 192
rc.Bottom = 128
rc.Right = 128
i = GetDC(0)
mdcWhite = NewMyHdc(i, rc.Right, rc.Bottom)
ReleaseDC 0, i
hBrush = CreateSolidBrush(vbWhite)
FillRect mdcWhite.hdc, rc, hBrush
DeleteObject hBrush
With Font
.lfCharSet = 1
.lfHeight = 12
.lfWeight = 400
End With
End Sub
Private Sub Class_Terminate()
SetWindowLong m_hWnd, GWL_WNDPROC, OldWindowProc
mdcWhite = DelMyHdc(mdcWhite)
Set mpicBk = Nothing
End Sub
Friend Sub Refresh()
Dim rc As RECT
If m_hWnd <> 0 Then
ShowWindow m_hWnd, 0
ShowWindow m_hWnd, 5
End If
End Sub
'几个GDI绘图函数功能的封装,有一定通用性,有些是我平时自己就喜欢用的模块。Private Function NewMyHdc(dHdc As Long, w As Long, h As Long, Optional Bm As Long) As MemHdc
With NewMyHdc
.hdc = CreateCompatibleDC(dHdc)
If Bm = 0 Then
.Bmp = CreateCompatibleBitmap(dHdc, w, h)
Else
.Bmp = Bm
End If
.obm = SelectObject(.hdc, .Bmp)
End With
End Function
Private Function DelMyHdc(MyHdc As MemHdc, Optional nobmp As Boolean) As MemHdc
With MyHdc
If .hdc <> 0 Then
SelectObject .hdc, .obm
If nobmp = False Then DeleteObject .Bmp
DeleteDC .hdc
End If
End With
End Function
Private Sub DrawPloy3(hdc As Long, rcDrop As RECT, Up As Boolean)
'画下拉菜单的小三角形
Dim ploy(2) As POINTL
Dim hBrush As Long, hOldBrush As Long
Dim hPen As Long, hOldPen As Long
With rcDrop
If Up Then
.Left = .Left - 1
.Right = .Right - 1
.Top = .Top - 1
.Bottom = .Bottom - 1
hBrush = CreateSolidBrush(m_lngTextHiColor)
hPen = CreatePen(PS_SOLID, 1, m_lngTextHiColor)
Else
hBrush = CreateSolidBrush(m_lngTextColor)
hPen = CreatePen(PS_SOLID, 1, m_lngTextColor)
End If
hOldPen = SelectObject(hdc, hPen)
hOldBrush = SelectObject(hdc, hBrush)
ploy(0).X = (.Left + .Right - 5) \ 2
ploy(0).Y = (.Top + .Bottom) \ 2
ploy(1).X = ploy(0).X + 4
ploy(1).Y = ploy(0).Y
ploy(2).X = ploy(0).X + 2
ploy(2).Y = ploy(0).Y + 2
End With
Polygon hdc, ploy(0), 3
SelectObject hdc, hOldPen
SelectObject hdc, hOldBrush
DeleteObject hPen
DeleteObject hBrush
End Sub
Private Sub GetIconSize(hIcon As Long)
'取得图像列表框图标的大小
Dim Bm As BITMAP, bi As ICONINFO
GetIconInfo hIcon, bi
GetObj bi.hbmColor, Len(Bm), Bm
DeleteObject bi.hbmColor
DeleteObject bi.hbmMask
mlngIconWidth = Bm.bmWidth
mlngIconHeight = Bm.bmHeight
End Sub
Private Sub DrawRect(hdc As Long, rc As RECT, State As Long, Optional IsDrop As Boolean)
Dim hPen As Long
If (State > 0 Or IsDrop) And m_lngBrdStyle > 3 Then
hPen = CreatePen(PS_SOLID, 1, m_lngBrdColor)
If IsDrop Then rc.Left = rc.Left - 1
FrameRect hdc, rc, hPen
If IsDrop Then rc.Left = rc.Left + 1
DeleteObject hPen
Exit Sub
End If
Select Case State
Case 0 '普通状态
Select Case m_lngBrdStyle
Case 1
If IsDrop Then DrawEdge hdc, rc, BDR_OUTER, BF_RECT Or BF_FLAT
Case 2
DrawEdge hdc, rc, BDR_RAISEDOUTER, BF_RECT
Case 3
DrawEdge hdc, rc, EDGE_RAISED, BF_RECT
End Select
Case 1 '高亮状态
Select Case m_lngBrdStyle
Case 0
DrawEdge hdc, rc, BDR_RAISEDINNER, BF_RECT
Case 1, 2, 3
DrawEdge hdc, rc, EDGE_RAISED, BF_RECT
End Select
Case 2 '按下状态
Select Case m_lngBrdStyle
Case 0
DrawEdge hdc, rc, BDR_SUNKENOUTER, BF_RECT
Case 1
DrawEdge hdc, rc, BDR_SUNKENINNER, BF_RECT
Case 2, 3
DrawEdge hdc, rc, EDGE_SUNKEN, BF_RECT
End Select
End Select
End Sub
'最后一部分,也是最核心的消息处理代码与主绘图过程Friend Function MsgProc(lParam As Long, MouseDown As Boolean) As Long
Dim tHDR As NMHDR
Dim className As String * 32
Dim retval As Long
CopyMemory tHDR, ByVal lParam, Len(tHDR)
If tHDR.hwndFrom <> 0 Then
retval = GetClassName(tHDR.hwndFrom, className, 33)
If retval > 0 Then
If Left$(className, retval) = "msvb_lib_toolbar" Then
MsgProc = OnCustomDraw(lParam, MouseDown)
End If
End If
End If
End Function
Private Function OnCustomDraw(lParam As Long, MouseDown As Boolean) As Long
Dim tTBCD As NMTBCUSTOMDRAW
Dim hBrush As Long
CopyMemory tTBCD, ByVal lParam, Len(tTBCD)
With tTBCD.nmcd
Select Case .dwDrawStage
Case CDDS_ITEMPREPAINT
OnCustomDraw = CDRF_SKIPDEFAULT
DrawToolbarButton .hdr.hwndFrom, .hdc, .dwItemSpec, .uItemState, .rc, MouseDown
Case CDDS_PREPAINT
OnCustomDraw = CDRF_NOTIFYITEMDRAW
GetClientRect .hdr.hwndFrom, .rc
If mpicBk Is Nothing Then
hBrush = CreateSolidBrush(m_lngBackColor)
Else
hBrush = CreatePatternBrush(mpicBk)
End If
FillRect .hdc, .rc, hBrush
DeleteObject hBrush
End Select
End With
End Function
Private Sub DrawToolbarButton(ByVal hWnd As Long, ByVal hdc As Long, itemSpec As Long, ByVal itemState As Long, tR As RECT, MouseDown As Boolean)
Dim i As Long
Dim bPushed As Boolean, bDropDown As Boolean, bHover As Boolean
Dim bDisabled As Boolean, bChecked As Boolean
Dim bSkipped As Boolean, bBottomText As Boolean, bNoDsbIcon As Boolean
Dim hIcon As Long, hImageList As Long
Dim tTB As TBBUTTON
Dim szText As Size, rcDrop As RECT, rcIcon As RECT
Dim hOldPen As Long, hPen As Long
Dim hFont As Long, hOldFont As Long
Dim sCaption As String, bFirstSetBk As Boolean
Dim lDropWidth As Long, lTxtColor As Long
sCaption = String$(128, vbNullChar)
i = SendMessage(hWnd, TB_GETBUTTONTEXTA, itemSpec, ByVal sCaption)
If i > 0 Then
sCaption = Left$(sCaption, i)
Else
sCaption = ""
End If
i = GetWindowLong(hWnd, GWL_STYLE)
bBottomText = ((i And TBSTYLE_LIST) = 0)
i = SendMessage(hWnd, TB_COMMANDTOINDEX, itemSpec, ByVal 0)
SendMessage hWnd, TB_GETBUTTON, i, tTB
bDisabled = (itemState And CDIS_DISABLED)
bChecked = (itemState And CDIS_CHECKED)
bHover = (itemState And CDIS_HOT)
bPushed = (itemState And CDIS_SELECTED)
If tTB.fsStyle And TBSTYLE_SEP Then '分隔线按钮
hPen = CreatePen(PS_SOLID, 1, vb3DShadow)
hOldPen = SelectObject(hdc, hPen)
MoveToEx hdc, tR.Left + 2&, tR.Top + 1&, ByVal 0
LineTo hdc, tR.Left + 2&, tR.Bottom - 1&
SelectObject hdc, hOldPen
DeleteObject hPen
Exit Sub
Else
hImageList = SendMessage(hWnd, TB_GETIMAGELIST, 0, ByVal 0)
If hImageList <> 0 Then '取得主图像列表
If mlngImgList <> hImageList Then
mlngImgList = hImageList
bFirstSetBk = True
mlngIconWidth = 0
End If
If bDisabled Then '取得禁用图像列表
i = SendMessage(hWnd, TB_GETDISABLEDIMAGELIST, 0, ByVal 0)
If i <> 0 And i <> hImageList Then
hImageList = i
If mlngDsbImgList <> i Then
mlngDsbImgList = i
bFirstSetBk = True
End If
Else
bNoDsbIcon = True
End If
ElseIf bHover Then '取得热图像列表
i = SendMessage(hWnd, TB_GETHOTIMAGELIST, 0, ByVal 0)
If i <> 0 And i <> hImageList Then
hImageList = i
If mlngHotImgList <> i Then
mlngHotImgList = i
bFirstSetBk = True
End If
End If
End If
If bFirstSetBk Then '首次使用需设定背景色
If ImageList_GetBkColor(hImageList) <> -1 Then
ImageList_SetBkColor hImageList, CLR_NONE
End If
End If
hIcon = ImageList_GetIcon(hImageList, tTB.iBitmap, ILD_NORMAL)
If mlngIconWidth = 0 Then GetIconSize hIcon
End If
'根据状态创建不同刷子与画笔
lTxtColor = m_lngTextColor
If bChecked Or bPushed Then
AlphaBlend hdc, tR.Left, tR.Top, tR.Right - tR.Left, tR.Bottom - tR.Top, mdcWhite.hdc, 0, 0, tR.Right - tR.Left, tR.Bottom - tR.Top, mlngBtnDownAlpha * &H10000
ElseIf bHover Then
AlphaBlend hdc, tR.Left, tR.Top, tR.Right - tR.Left, tR.Bottom - tR.Top, mdcWhite.hdc, 0, 0, tR.Right - tR.Left, tR.Bottom - tR.Top, mlngBtnHiAlpha * &H10000
lTxtColor = m_lngTextHiColor
Else
bSkipped = True
End If
SetTextColor hdc, lTxtColor
If tTB.fsStyle And TBSTYLE_DROPDOWN Then
lDropWidth = 14
bDropDown = bHover And MouseDown And Not bPushed
SetRect rcDrop, tR.Right - lDropWidth, tR.Top, tR.Right, tR.Bottom
tR.Right = tR.Right - lDropWidth
End If
End If
SetBkMode hdc, 1 '文本背景透明
If bSkipped = False Then '根据样式不同,画不同边框并填充
If bChecked Or bPushed Then
DrawRect hdc, tR, 2
Else
DrawRect hdc, tR, 1
End If
Else
DrawRect hdc, tR, 0
End If
If tTB.fsStyle And TBSTYLE_DROPDOWN Then '处理下拉菜单的小按钮
If bSkipped = False Or m_lngBrdStyle > 0 Then
If bDropDown Then
AlphaBlend hdc, rcDrop.Left, rcDrop.Top, lDropWidth, rcDrop.Bottom - rcDrop.Top, mdcWhite.hdc, 0, 0, rcDrop.Right - rcDrop.Left, rcDrop.Bottom - rcDrop.Top, mlngBtnDownAlpha * &H10000
End If
If bDropDown Or bPushed Then
DrawRect hdc, rcDrop, 2, True
ElseIf bHover Then
DrawRect hdc, rcDrop, 1, True
Else
DrawRect hdc, rcDrop, 0, True
MouseDown = False
End If
Else
MouseDown = False
End If
DrawPloy3 hdc, rcDrop, bHover And Not (bDropDown Or bPushed)
End If
'画图标与文本
With rcIcon
'计算图标区域
.Top = tR.Top + 3
If bBottomText = False Then .Left = tR.Left + 3
If mlngIconWidth < 16 Then
If bBottomText Then .Left = tR.Left + (tR.Right - tR.Left - 16) \ 2
.Right = .Left + 16
Else
If bBottomText Then .Left = tR.Left + (tR.Right - tR.Left - mlngIconWidth) \ 2
.Right = .Left + mlngIconWidth
End If
If mlngIconHeight < 16 Then
.Bottom = .Top + 16
Else
.Bottom = .Top + mlngIconHeight
End If
If bHover And (Not (bPushed Or bChecked)) Then
.Left = .Left - 1
.Top = .Top - 1
.Right = .Right - 1
.Bottom = .Bottom - 1
End If
If hImageList <> 0 Then
If bDisabled And bNoDsbIcon Then
If hIcon Then
DrawState hdc, 0, 0, hIcon, 0, .Left, .Top, 0, 0, DST_ICON Or DSS_DISABLED
End If
Else
ImageList_Draw hImageList, tTB.iBitmap, hdc, .Left, .Top, ILD_NORMAL
End If
End If
If Len(sCaption) > 0 Then
hFont = CreateFontIndirect(Font)
hOldFont = SelectObject(hdc, hFont)
If bBottomText Then
If bDisabled Then
SetTextAlign hdc, TA_LEFT
GetTextExtentPoint32 hdc, sCaption, lstrlen(sCaption), szText
DrawState hdc, 0, 0, StrPtr(StrConv(sCaption, vbFromUnicode)), lstrlen(sCaption), (.Right + .Left - szText.cx) \ 2, .Bottom + 1, 0, 0, DST_TEXT Or DSS_DISABLED
Else
SetTextAlign hdc, TA_CENTER
TextOut hdc, (.Right + .Left) \ 2, .Bottom + 1, sCaption, lstrlen(sCaption)
End If
Else
SetTextAlign hdc, TA_LEFT
If bDisabled Then
'GetTextExtentPoint32 hdc, sCaption, lstrlen(sCaption), szText
DrawState hdc, 0, 0, StrPtr(StrConv(sCaption, vbFromUnicode)), lstrlen(sCaption), .Right + 1, (.Top + .Bottom - Font.lfHeight) \ 2, 0, 0, DST_TEXT Or DSS_DISABLED
Else
TextOut hdc, .Right + 1, (.Top + .Bottom - Font.lfHeight) \ 2, sCaption, lstrlen(sCaption)
End If
End If
SelectObject hdc, hOldFont
DeleteObject hFont
End If
End With
If hIcon <> 0 Then DestroyIcon hIcon
End Sub初涉Custom Draw消息处理,ToolBar本来我就很少用,所以我的兴趣是处理过程本身,而不是应用需求,很难静心深入研究它。
留言一
如何获取其Drap消,可以这样改:
Drap消息:TBN_DROPDOWN
Private Const TBN_FIRST As Long = -700
Private Const TBN_DROPDOWN As Long = (TBN_FIRST - 10)留言二
你好,这个问题很严重啊,在2003下ImageList_GetIcon(hImageList, tTB.iBitmap, ILD_NORMAL)的返回是0啊,而且getlasterror还是为0