Solved

How to tell if a window is within screen boundaries?

Posted on 2002-03-22
5
236 Views
Last Modified: 2010-05-02
Scenerio:
My app is running.
If the user opens a window on a program and moves it anywhere outside the screen boundaries, my program detects it and puts up a msg box.
Basically, this app would know if the window that has focus is within or without the screen boundaries.
0
Comment
Question by:rbend
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
5 Comments
 
LVL 3

Accepted Solution

by:
jbil earned 75 total points
ID: 6888677
Here's what Ive got so far..
form with text1 and timer1


Option Explicit
Private Declare Function GetForegroundWindow Lib "user32" () As Long
Private Declare Function GetActiveWindow Lib "user32" () As Long
Private Declare Function ClientToScreen Lib "user32" (ByVal hwnd As Long, lpPoint As POINTAPI) As Long
Private Declare Function GetWindowPlacement Lib "user32" (ByVal hwnd As Long, lpwndpl As WINDOWPLACEMENT) As Long
Private Declare Function SetWindowPlacement Lib "user32" (ByVal hwnd As Long, lpwndpl As WINDOWPLACEMENT) As Long
Private Const SW_MINIMIZE = 6
Private Type POINTAPI
        x As Long
        y As Long
End Type
Private Type RECT
        Left As Long
        Top As Long
        Right As Long
        Bottom As Long
End Type
Private Type WINDOWPLACEMENT
        Length As Long
        flags As Long
        showCmd As Long
        ptMinPosition As POINTAPI
        ptMaxPosition As POINTAPI
        rcNormalPosition As RECT
End Type

Dim myrect As RECT
Dim busywin As Long

Private Sub Form_Click()
Text1.Text = ""
End Sub


Private Sub Timer1_Timer()
Dim rside As Long
Dim bside As Long
Dim winpos As WINDOWPLACEMENT
Dim rtn As Long
 
   busywin = GetForegroundWindow
   winpos.Length = Len(winpos)
    rtn = GetWindowPlacement(busywin, winpos)
    myrect = winpos.rcNormalPosition
    rside = (myrect.Right) * Screen.TwipsPerPixelX
    bside = (myrect.Bottom) * Screen.TwipsPerPixelY
    If myrect.Top < 0 Or myrect.Left < 0 Or bside > Screen.Height Or rside > Screen.Width Then
        Text1.Text = "foul!"
        Beep
    End If

End Sub
0
 

Author Comment

by:rbend
ID: 6888845
jbil:
Just one more thing and I think this will work.
Can you add :
To close the window that "foul'd" ?
When it goes off the screen, close it?
More points when you do.
Thanks
0
 

Author Comment

by:rbend
ID: 6888893
jbil:
Never mind the second part.
I figured it out.
Thanks.
Perfect.
0
 

Author Comment

by:rbend
ID: 6888951
jbil:
I just noticed something...
If I click on the desktop (not on any icon or anything)
the "foul" message appears.
Can you make it so that "focus" on the desktop does NOT acitvate the program?
More Points.
0
 

Author Comment

by:rbend
ID: 6889032
jbil:
Ok...I took care of that too.
Thanks.
b
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When designing a form there are several BorderStyles to choose from, all of which can be classified as either 'Fixed' or 'Sizable' and I'd guess that 'Fixed Single' or one of the other fixed types is the most popular choice. I assume it's the most p…
Background What I'm presenting in this article is the result of 2 conditions in my work area: We have a SQL Server production environment but no development or test environment; andWe have an MS Access front end using tables in SQL Server but we a…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question