Mr. Young

[Cbomb]

You have posted some code or a project that highlighted windows with the Spy++ style. I would be greatful if you could post it once again. Thanks in advance.

[Edited by Cbomb on 04-30-2000 at 06:17 PM]

[Aaron Young]

Sure, no problem:

'Add a Picturebox and a Timer Control to a Form
'
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

Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Private Declare Function WindowFromPoint Lib "user32" (ByVal xPoint As Long, ByVal yPoint As Long) As Long
Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) 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
Private Declare Function CreateRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function InvertRgn Lib "gdi32" (ByVal hdc As Long, ByVal hRgn As Long) As Long
Private Declare Function CombineRgn Lib "gdi32" (ByVal hDestRgn As Long, ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long, ByVal nCombineMode As Long) As Long
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer

Private Const RGN_XOR = 3
Private Const VK_LBUTTON = &H1

Private lRgn As Long

Private Sub Form_Load()
    Timer1.Enabled = False
    Timer1.Interval = 100
    Screen.MouseIcon = LoadPicture("..\Common\Graphics\Cursors\Bullseye.cur")
    Picture1 = Screen.MouseIcon
    Picture1.AutoSize = True
End Sub

Private Sub Picture1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    lRgn = 0
    Screen.MousePointer = vbCustom
    Timer1.Enabled = True
End Sub

Private Sub Timer1_Timer()
    Static lLastHwnd As Long
    Dim tPOINT As POINTAPI
    Dim tRECT As RECT
    Dim lHwnd As Long
    Dim lDC As Long
    Dim lRgn1 As Long
    Dim lRgn2 As Long
    
    If GetAsyncKeyState(VK_LBUTTON) = 0 Then
        Timer1.Enabled = False
        lDC = GetDC(0)
        Call InvertRgn(lDC, lRgn)
        Screen.MousePointer = vbDefault
        Exit Sub
    End If
    
    Call GetCursorPos(tPOINT)
    lHwnd = WindowFromPoint(tPOINT.X, tPOINT.Y)
    If lLastHwnd = lHwnd Then Exit Sub
    lLastHwnd = lHwnd
    lDC = GetDC(0)
    Call InvertRgn(lDC, lRgn)
    
    Call GetWindowRect(lHwnd, tRECT)
    lRgn = CreateRectRgn(0, 0, 1, 1)
    lRgn1 = CreateRectRgn(tRECT.Left, tRECT.Top, tRECT.Right, tRECT.Bottom)
    lRgn2 = CreateRectRgn(tRECT.Left + 3, tRECT.Top + 3, tRECT.Right - 3, tRECT.Bottom - 3)
    Call CombineRgn(lRgn, lRgn1, lRgn2, RGN_XOR)
    Call InvertRgn(lDC, lRgn)
    Call ReleaseDC(0, lDC)
End Sub