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Dicas
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Visual Basic (ActiveX/Controles/DLL)
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Título da Dica: ToolTip estilo Windows XP
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Postada em 27/9/2004 por Brexuega
Crie um projecto Standard
Adicione uma class e de-lhe o nome de CBalloonToolTip
Adicione 2 textbox e um command button ao form1
Coloque o seguinte codigo no form1:
---------------------------------------------------------------------------------------------------
Dim TT1 As New CBalloonToolTip '//Demo for On Demand tooltip
Dim TT2 As New CBalloonToolTip '//Demo for mouse over tooltip
Private Declare Function GetKeyState Lib "user32" (ByVal nVirtKey As Long) As Integer
Public Function CapsLockOn() As Boolean
Dim iKeyState As Integer
iKeyState = GetKeyState(vbKeyCapital)
CapsLockOn = (iKeyState = 1 Or iKeyState = -127)
End Function
Private Sub Command1_Click()
If Text1.Text <> "mypassword" Then
TT1.Style = TTBalloon
TT1.Icon = TTIconError
TT1.Title = IIf(Text1.Text = "", "Blank Password", "Invalid Password")
TT1.TipText = "Please Enter Correct Password..."
TT1.PopupOnDemand = True
TT1.CreateToolTip Text1.hwnd
TT1.Show 0, Text1.Height / Screen.TwipsPerPixelX - 1 '//In Pixel only
End If
End Sub
Private Sub Form_Load()
TT2.Style = TTBalloon
TT2.Icon = TTIconInfo
TT2.Title = "Information"
TT2.TipText = "A little cute tooltip for Textbox2"
TT2.PopupOnDemand = False
TT2.ForeColor = vbWhite
TT2.BackColor = &HCE7110
TT2.VisibleTime = 6000 'After 6 Seconds tooltip will go away
TT2.CreateToolTip Text2.hwnd
End Sub
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
TT1.Destroy
End Sub
Private Sub Form_Paint()
TT1.Destroy
End Sub
Private Sub Form_Resize()
TT1.Destroy
End Sub
Private Sub Form_Unload(Cancel As Integer)
TT1.Destroy
TT2.Destroy
End Sub
Private Sub Text1_KeyDown(KeyCode As Integer, Shift As Integer)
If CapsLockOn Then
TT1.Style = TTBalloon
TT1.Icon = TTIconWarning
TT1.Title = "Caps Lock is on"
TT1.TipText = "Check your caps lock key..."
TT1.CreateToolTip Text1.hwnd
TT1.Show 0, Text1.Height / Screen.TwipsPerPixelX - 1
Else
TT1.Destroy
End If
End Sub
Private Sub Text1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
TT1.Destroy
End Sub
---------------------------------------------------------------------------------------------------
coloque o seguinte codigo na class:
---------------------------------------------------------------------------------------------------
Option Explicit
Private Declare Sub InitCommonControls Lib "comctl32.dll" ()
''Windows API Functions
Private Declare Function CreateWindowEx Lib "user32.dll" 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, _
ByRef lpParam As Any) As Long
Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" ( _
ByVal hwnd As Long, _
ByVal wMsg As Long, _
ByVal wParam As Long, _
ByRef lParam As Any) As Long
Private Declare Function SendMessageLong Lib "user32" Alias "SendMessageA" ( _
ByVal hwnd As Long, _
ByVal wMsg As Long, _
ByVal wParam As Long, _
ByVal lParam As Long) As Long
Private Declare Function DestroyWindow Lib "user32" ( _
ByVal hwnd As Long) As Long
Private Declare Function ClientToScreen Lib "user32" ( _
ByVal hwnd As Long, _
lpPoint As POINTAPI) As Long
''Windows API Constants
Private Const WM_USER = &H400
Private Const CW_USEDEFAULT = &H80000000
''Windows API Types
Private Type RECT
left As Long
top As Long
right As Long
bottom As Long
End Type
Private Type POINTAPI
X As Long
Y As Long
End Type
'Tooltip Window Constants
Private Const TTS_NOPREFIX = &H2
Private Const TTF_TRANSPARENT = &H100
Private Const TTF_CENTERTIP = &H2
Private Const TTM_ADDTOOLA = (WM_USER + 4)
Private Const TTM_ACTIVATE = WM_USER + 1
Private Const TTM_UPDATETIPTEXTA = (WM_USER + 12)
Private Const TTM_SETMAXTIPWIDTH = (WM_USER + 24)
Private Const TTM_SETTIPBKCOLOR = (WM_USER + 19)
Private Const TTM_SETTIPTEXTCOLOR = (WM_USER + 20)
Private Const TTM_SETTITLE = (WM_USER + 32)
Private Const TTS_BALLOON = &H40
Private Const TTS_ALWAYSTIP = &H1
Private Const TTF_SUBCLASS = &H10
Private Const TTF_TRACK = &H20
Private Const TTF_IDISHWND = &H1
Private Const TTM_SETDELAYTIME = (WM_USER + 3)
Private Const TTDT_AUTOPOP = 2
Private Const TTDT_INITIAL = 3
Private Const TTM_TRACKACTIVATE = WM_USER + 17
Private Const TTM_TRACKPOSITION = WM_USER + 18
Private Const WS_POPUP = &H80000000
Private Const TOOLTIPS_CLASSA = "tooltips_class32"
''Tooltip Window Types
Private Type TOOLINFO
lSize As Long
lFlags As Long
hwnd As Long
lId As Long
lpRect As RECT
hInstance As Long
lpStr As String
lParam As Long
End Type
Public Enum ttIconType
TTNoIcon = 0
TTIconInfo = 1
TTIconWarning = 2
TTIconError = 3
End Enum
Public Enum ttStyleEnum
TTStandard
TTBalloon
End Enum
'local variable(s) to hold property value(s)
Private mvarBackColor As Long
Private mvarTitle As String
Private mvarForeColor As Long
Private mvarIcon As ttIconType
Private mvarCentered As Boolean
Private mvarStyle As ttStyleEnum
Private mvarTipText As String
Private mvarVisibleTime As Long
Private mvarDelayTime As Long
Private mvarPopupOnDemand As Boolean
'private data
Private m_lTTHwnd As Long ' hwnd of the tooltip
Private m_lParentHwnd As Long ' hwnd of the window the tooltip attached to
Private ti As TOOLINFO
Private Sub Class_Initialize()
InitCommonControls
mvarDelayTime = 500
mvarVisibleTime = 5000
mvarPopupOnDemand = False
End Sub
Private Sub Class_Terminate()
Destroy
End Sub
'//////////////////////////////////////////////////////
Public Property Get VisibleTime() As Long
VisibleTime = mvarVisibleTime
End Property
Public Property Let VisibleTime(ByVal lData As Long)
mvarVisibleTime = lData
End Property
'//////////////////////////////////////////////////////
Public Property Get DelayTime() As Long
DelayTime = mvarDelayTime
End Property
Public Property Let DelayTime(ByVal lData As Long)
mvarDelayTime = lData
End Property
'//////////////////////////////////////////////////////
Public Property Let Icon(ByVal vData As ttIconType)
mvarIcon = vData
If m_lTTHwnd <> 0 And mvarTitle <> Empty And mvarIcon <> TTNoIcon Then
SendMessage m_lTTHwnd, TTM_SETTITLE, CLng(mvarIcon), ByVal mvarTitle
End If
End Property
Public Property Get Icon() As ttIconType
Icon = mvarIcon
End Property
'//////////////////////////////////////////////////////
Public Property Let ForeColor(ByVal vData As Long)
mvarForeColor = vData
If m_lTTHwnd <> 0 Then
SendMessage m_lTTHwnd, TTM_SETTIPTEXTCOLOR, mvarForeColor, 0&
End If
End Property
Public Property Get ForeColor() As Long
ForeColor = mvarForeColor
End Property
'//////////////////////////////////////////////////////
Public Property Let Title(ByVal vData As String)
mvarTitle = vData
If m_lTTHwnd <> 0 And mvarTitle <> Empty And mvarIcon <> TTNoIcon Then
SendMessage m_lTTHwnd, TTM_SETTITLE, CLng(mvarIcon), ByVal mvarTitle
End If
End Property
Public Property Get Title() As String
Title = ti.lpStr
End Property
'//////////////////////////////////////////////////////
Public Property Let PopupOnDemand(ByVal vData As Boolean)
mvarPopupOnDemand = vData
'If m_lTTHwnd <> 0 Then
'End If
End Property
Public Property Get PopupOnDemand() As Boolean
PopupOnDemand = mvarPopupOnDemand
End Property
'//////////////////////////////////////////////////////
Public Property Let BackColor(ByVal vData As Long)
mvarBackColor = vData
If m_lTTHwnd <> 0 Then
SendMessage m_lTTHwnd, TTM_SETTIPBKCOLOR, mvarBackColor, 0&
End If
End Property
Public Property Get BackColor() As Long
BackColor = mvarBackColor
End Property
'//////////////////////////////////////////////////////
Public Property Let TipText(ByVal vData As String)
mvarTipText = vData
ti.lpStr = vData
If m_lTTHwnd <> 0 Then
SendMessage m_lTTHwnd, TTM_UPDATETIPTEXTA, 0&, ti
End If
End Property
Public Property Get TipText() As String
TipText = mvarTipText
End Property
'//////////////////////////////////////////////////////
Public Property Let Style(ByVal vData As ttStyleEnum)
mvarStyle = vData
End Property
Public Property Get Style() As ttStyleEnum
Style = mvarStyle
End Property
'//////////////////////////////////////////////////////
Public Property Let Centered(ByVal vData As Boolean)
mvarCentered = vData
End Property
Public Property Get Centered() As Boolean
Centered = mvarCentered
End Property
'X and Y are in Pixel so dont send vbTwips value
Public Sub Show(Optional X As Long = 0, Optional Y As Long = 0)
Dim pt As POINTAPI
Dim ptTip As Long
Dim ret As Long
With pt
.X = X
.Y = Y
End With
ret = ClientToScreen(Form1.Text1.hwnd, pt)
ptTip = pt.Y * &H10000
ptTip = ptTip + pt.X
' These two messages will set the position of the tooltip:
ret = SendMessage(m_lTTHwnd, TTM_TRACKPOSITION, 0, ByVal ptTip)
ret = SendMessage(m_lTTHwnd, TTM_TRACKACTIVATE, True, ti)
End Sub
Public Function CreateToolTip(ByVal ParentHwnd As Long) As Boolean
Dim lWinStyle As Long
If m_lTTHwnd <> 0 Then
DestroyWindow m_lTTHwnd
End If
m_lParentHwnd = ParentHwnd
''create baloon style if desired
If mvarStyle = TTBalloon Then lWinStyle = lWinStyle Or TTS_BALLOON
m_lTTHwnd = CreateWindowEx(0&, _
TOOLTIPS_CLASSA, _
vbNullString, _
lWinStyle, _
0&, _
0&, _
0&, _
0&, _
m_lParentHwnd, _
0&, _
0&, _
0&)
''now set our tooltip info structure
With ti
'//dont incude TTF_SUBCLASS for on demand
''if we want it centered, then set that flag
If mvarCentered Then
If mvarPopupOnDemand = False Then
.lFlags = TTF_SUBCLASS Or TTF_CENTERTIP Or TTF_IDISHWND
Else
.lFlags = TTF_IDISHWND Or TTF_TRACK Or TTF_CENTERTIP
End If
Else
If mvarPopupOnDemand = False Then
.lFlags = TTF_SUBCLASS Or TTF_IDISHWND
Else
.lFlags = TTF_IDISHWND Or TTF_TRACK Or TTF_TRANSPARENT
End If
End If
'set the hwnd prop to our parent control's hwnd
.hwnd = m_lParentHwnd
.lId = m_lParentHwnd '0
.hInstance = App.hInstance
'.lpstr = ALREADY SET
'.lpRect = lpRect
.lSize = Len(ti)
End With
''add the tooltip structure
SendMessage m_lTTHwnd, TTM_ADDTOOLA, 0&, ti
''if we want a title or we want an icon
If mvarTitle <> vbNullString Or mvarIcon <> TTNoIcon Then
SendMessage m_lTTHwnd, TTM_SETTITLE, CLng(mvarIcon), ByVal mvarTitle
End If
If mvarForeColor <> Empty Then
SendMessage m_lTTHwnd, TTM_SETTIPTEXTCOLOR, mvarForeColor, 0&
End If
If mvarBackColor <> Empty Then
SendMessage m_lTTHwnd, TTM_SETTIPBKCOLOR, mvarBackColor, 0&
End If
SendMessageLong m_lTTHwnd, TTM_SETDELAYTIME, TTDT_AUTOPOP, mvarVisibleTime
SendMessageLong m_lTTHwnd, TTM_SETDELAYTIME, TTDT_INITIAL, mvarDelayTime
End Function
Public Sub Destroy()
If m_lTTHwnd <> 0 Then
DestroyWindow m_lTTHwnd
End If
End Sub
---------------------------------------------------------------------------------------------------
Fonte: http://www.codeproject.com/
Créditos: Nayan Patel
¥ ADS
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