看这段代码:Public Const TTS_ALWAYSTIP = &H1 Public Const TTS_NOPREFIX = &H2 Public Const TTS_BALLOON = &H40 Public Const CW_USEDEFAULT = &H80000000 Public Const WS_POPUP = &H80000000 Public Const WM_USER = &H400 ' 提示的消息 Public Const TTM_SETDELAYTIME = (WM_USER + 3) Public Const TTM_ADDTOOL = (WM_USER + 4) Public Const TTM_SETTIPBKCOLOR = (WM_USER + 19) Public Const TTM_SETTIPTEXTCOLOR = (WM_USER + 20) Public Const TTM_GETTIPBKCOLOR = (WM_USER + 22) Public Const TTM_GETTIPTEXTCOLOR = (WM_USER + 23) Public Const TTM_SETMAXTIPWIDTH = (WM_USER + 24)Public Const TTDT_AUTOMATIC = 0 Public Const TTDT_RESHOW = 1 Public Const TTDT_AUTOPOP = 2 Public Const TTDT_INITIAL = 3Public Const TTF_IDISHWND = &H1 Public Const TTF_CENTERTIP = &H2 Public Const TTF_SUBCLASS = &H10Public Type TOOLINFO cbSize As Long uFlags As Long hWnd As Long uId As Long cRect As RECT hinst As Long lpszText As String End Type Public Declare Function CreateWindowEx Lib "user32" Alias "CreateWindowExA" (ByVal dwExStyle As Long, ByVal lpClassName As String, ByVal lpWindowName As String, ByVal dwStyle As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hWndParent As Long, ByVal hMenu As Long, ByVal hInstance As Long, lpParam As Any) As Long Public Declare Function DestroyWindow Lib "user32" (ByVal hWnd As Long) As Long Public Declare Function SendMessageLong Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As LongDeclare Sub InitCommonControls Lib "comctl32.dll" ()Public bCreated As Boolean, hTT As Long Public hCreated() As LongPublic Sub CreateTTWindow(hParent As Long, Optional bBalloon As Boolean = False) Dim h As Long, lStyle As Long lStyle = TTS_NOPREFIX Or TTS_ALWAYSTIP InitCommonControls If bBalloon Then lStyle = lStyle Or TTS_BALLOON hTT = CreateWindowEx(0, "tooltips_class32", 0, lStyle, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, hParent, 0, App.hInstance, 0) If hTT = 0 Then MsgBox "错误!无法建立工具提示窗口!", vbCritical, "错误" If Not bCreated Then ReDim hCreated(0) bCreated = True Else ReDim Preserve hCreated(UBound(hCreated) + 1) End If hCreated(UBound(hCreated)) = hTT End SubPublic Sub SetToolTip(objTT As Object, sTipText As String, Optional BKColor As Long = &HEEFFFF, Optional TxtColor As Long = vbBlack, Optional MaxWidth As Long = 300, Optional DelayTime As Long = 500, Optional VisibleTime As Long = 2000, Optional bCenter As Boolean = False) Dim TI As TOOLINFO With TI GetClientRect objTT.hWnd, .cRect .hWnd = objTT.hWnd .uFlags = TTF_IDISHWND Or TTF_SUBCLASS If bCenter Then .uFlags = .uFlags Or TTF_CENTERTIP End If .uId = objTT.hWnd .lpszText = sTipText .cbSize = Len(TI) End With SendMessageLong hTT, TTM_SETMAXTIPWIDTH, 0, MaxWidth SendMessageLong hTT, TTM_SETDELAYTIME, TTDT_INITIAL, DelayTime SendMessageLong hTT, TTM_SETDELAYTIME, TTDT_AUTOPOP, VisibleTime SendMessageLong hTT, TTM_SETTIPTEXTCOLOR, TxtColor, 0& SendMessageLong hTT, TTM_SETTIPBKCOLOR, BKColor, 0& SendMessage hTT, TTM_ADDTOOL, 0, TI End SubPublic Sub DestroyTT() If Not bCreated Then Exit Sub Dim i As Integer For i = 0 To UBound(hCreated) DestroyWindow hCreated(i) Next End Sub使用方法:Form_Load里先CreateTT 然后把需要的控件统统SetTooltip 在 Form_Unload里DestoryTT支持换行!
Public Const TTS_NOPREFIX = &H2
Public Const TTS_BALLOON = &H40
Public Const CW_USEDEFAULT = &H80000000
Public Const WS_POPUP = &H80000000
Public Const WM_USER = &H400
' 提示的消息
Public Const TTM_SETDELAYTIME = (WM_USER + 3)
Public Const TTM_ADDTOOL = (WM_USER + 4)
Public Const TTM_SETTIPBKCOLOR = (WM_USER + 19)
Public Const TTM_SETTIPTEXTCOLOR = (WM_USER + 20)
Public Const TTM_GETTIPBKCOLOR = (WM_USER + 22)
Public Const TTM_GETTIPTEXTCOLOR = (WM_USER + 23)
Public Const TTM_SETMAXTIPWIDTH = (WM_USER + 24)Public Const TTDT_AUTOMATIC = 0
Public Const TTDT_RESHOW = 1
Public Const TTDT_AUTOPOP = 2
Public Const TTDT_INITIAL = 3Public Const TTF_IDISHWND = &H1
Public Const TTF_CENTERTIP = &H2
Public Const TTF_SUBCLASS = &H10Public Type TOOLINFO
cbSize As Long
uFlags As Long
hWnd As Long
uId As Long
cRect As RECT
hinst As Long
lpszText As String
End Type
Public Declare Function CreateWindowEx Lib "user32" Alias "CreateWindowExA" (ByVal dwExStyle As Long, ByVal lpClassName As String, ByVal lpWindowName As String, ByVal dwStyle As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hWndParent As Long, ByVal hMenu As Long, ByVal hInstance As Long, lpParam As Any) As Long
Public Declare Function DestroyWindow Lib "user32" (ByVal hWnd As Long) As Long
Public Declare Function SendMessageLong Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As LongDeclare Sub InitCommonControls Lib "comctl32.dll" ()Public bCreated As Boolean, hTT As Long
Public hCreated() As LongPublic Sub CreateTTWindow(hParent As Long, Optional bBalloon As Boolean = False)
Dim h As Long, lStyle As Long
lStyle = TTS_NOPREFIX Or TTS_ALWAYSTIP
InitCommonControls
If bBalloon Then lStyle = lStyle Or TTS_BALLOON
hTT = CreateWindowEx(0, "tooltips_class32", 0, lStyle, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, hParent, 0, App.hInstance, 0)
If hTT = 0 Then MsgBox "错误!无法建立工具提示窗口!", vbCritical, "错误"
If Not bCreated Then
ReDim hCreated(0)
bCreated = True
Else
ReDim Preserve hCreated(UBound(hCreated) + 1)
End If
hCreated(UBound(hCreated)) = hTT
End SubPublic Sub SetToolTip(objTT As Object, sTipText As String, Optional BKColor As Long = &HEEFFFF, Optional TxtColor As Long = vbBlack, Optional MaxWidth As Long = 300, Optional DelayTime As Long = 500, Optional VisibleTime As Long = 2000, Optional bCenter As Boolean = False)
Dim TI As TOOLINFO
With TI
GetClientRect objTT.hWnd, .cRect
.hWnd = objTT.hWnd
.uFlags = TTF_IDISHWND Or TTF_SUBCLASS
If bCenter Then
.uFlags = .uFlags Or TTF_CENTERTIP
End If
.uId = objTT.hWnd
.lpszText = sTipText
.cbSize = Len(TI)
End With
SendMessageLong hTT, TTM_SETMAXTIPWIDTH, 0, MaxWidth
SendMessageLong hTT, TTM_SETDELAYTIME, TTDT_INITIAL, DelayTime
SendMessageLong hTT, TTM_SETDELAYTIME, TTDT_AUTOPOP, VisibleTime
SendMessageLong hTT, TTM_SETTIPTEXTCOLOR, TxtColor, 0&
SendMessageLong hTT, TTM_SETTIPBKCOLOR, BKColor, 0&
SendMessage hTT, TTM_ADDTOOL, 0, TI
End SubPublic Sub DestroyTT()
If Not bCreated Then Exit Sub
Dim i As Integer
For i = 0 To UBound(hCreated)
DestroyWindow hCreated(i)
Next
End Sub使用方法:Form_Load里先CreateTT
然后把需要的控件统统SetTooltip
在 Form_Unload里DestoryTT支持换行!
运行结果是提示 “第一行 第二行”
应该怎么做?