Re: Subject: How to get the name and status of the windows, programmatically?
This bounced back the first time.. sending again...
---
Hamid,
You can use the EnumDesktopWindows function from windows API. This function
enumerates all open windows and passes their handles to a callback function. The
callback function can then check the state of the windows using the handles passed-in,
and in turn calling other windows functions like IsIconic, IsZoomed, etc., See MSDN
for more details on these functions.
You can implement the EnumDesktopWindows and the callback function in a dll. And call
the exported function from LabVIEW. Here's some code snippets.. it pops-up message
boxes with the windows' states:
// This is an exported function.. call this from LabVIEW
extern C WINFO_API int fnWinfo(void)
{
return EnumDesktopWindows(NULL, EnumWindowsProc, NULL);
}
// callback fn which EnumDesktopWindows calls
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
char wname[256] = ;
GetWindowText(hwnd, wname, 256);
if(!IsWindowVisible(hwnd) || strlen(wname) == 0)
{
//not a valid window -- do nothing
}
else
{
if(IsIconic(hwnd))
{
MessageBox(NULL, strcat(wname, -- minimized), , MB_OK);
}
else if(IsZoomed(hwnd))
{
MessageBox(NULL, strcat(wname, -- maximized), , MB_OK);
}
else if(GetActiveWindow() == hwnd)
{
MessageBox(NULL, strcat(wname, -- active), , MB_OK);
}
else
{
MessageBox(NULL, strcat(wname, -- restore/other), ,
MB_OK);
}
}
return true;
}
Your LabVIEW dll node will look like:
unsigned long fnWinfo(void);
Caveat: The above code was put together in a jiffy for proof-of-concept only; it's not
perfect. You can easily modify this to return the info' to labVIEW (instead of the
msg boxes). Note that the EnumDesktopWindows actually returns a bunch of windows
without any names; we filter them out
above.
Hope this helps.
Regards,
Khalid Ansari
- Forwarded by Khalid Ansari on 03/04/2004 11:29 PM -
[EMAIL PROTECTED]
Sent by: [EMAIL PROTECTED]
03/03/2004 07:42 AM
To: [EMAIL PROTECTED]
cc:
Subject: How to get the name and status of the windows, programmatically?
Hi List
I need to get the name of all the windows that are open. Also, I need to
find out the status of the windows
i.e. Which one of them is maximized or minimized? (This is NOT limited to
Labview windows, any other window must be included)
How can I find out which window is active?
Any help is appreciated
Thanks
+
Dr. Hamid R. Yazdi
Re: How to get the name and status of the windows, programmatically?
Hamid, You wrote: I need to get the name of all the windows that are open. Also, I need to find out the status of the windows i.e. Which one of them is maximized or minimized? How can I find out which window is active? It is not clear if you mean all the windows of all programs or just all LabVIEW VI panels. In the former case, I can't help you. The LabVIEW Application has a property called All VIs in Memory which provides the names of those VIs. In LabVIEW 7, each VI has a property called Front Panel Window State which has values including Standard, Minimized, and Maximized. In earlier versions, only the Front Panel Window Open property exists and there does not appear to be an easy way to determined minimized or maximized windows. The Front Panel Window is Frontmost property will tell you which is active. You can see examples of the use of these properties in Copy/Paste Boolean Attributes (http://www.openg.org/tiki/tiki-index.php?page=Copy-Paste+Boolean+Attributes) on the OpenG site and in Edit Panel Elements and Ghost Buster on my site (http://www.sullutions.com/LabVIEW.html), among others. -- EnWirementally, Paul F. Sullivan SULLutions (781)769-6869 when a single discipline is not enough visit http://www.SULLutions.com
Re: Subject: How to get the name and status of the windows, programmatically?
John; Thanks for the email. I still don't know which window has the focus. I almost did what you mentioned. First I get the non-labview windows (names) save them in an array, then minimize them all For Labview, you have to minimize a window called Labview and this minimizes all LV windows then you show your alarm in a clean screen and after user acknowledge you do the reverse Thanks again Hamid + Dr. Hamid R. Yazdi Federal Mogul Manufacturing technology 3935 Research park drive Ann Arbor, MI 48108 Tel: 734 222 4108
How to get the name and status of the windows, programmatically?
Hi List I need to get the name of all the windows that are open. Also, I need to find out the status of the windows i.e. Which one of them is maximized or minimized? (This is NOT limited to Labview windows, any other window must be included) How can I find out which window is active? Any help is appreciated Thanks + Dr. Hamid R. Yazdi Federal Mogul Manufacturing technology 3935 Research park drive Ann Arbor, MI 48108 Tel: 734 222 4108
