Solved

Hide another app's window

Posted on 2000-04-10
5
249 Views
Last Modified: 2013-11-20
I have a database application running as a Win95 service. When it starts, the database engine also starts, which brings up the database engine window. Since my app runs as a service, I hide its main window. And I'd like to hide the database engine window too. But it's not successful. I tried finding db engine window first then hiding it by calling ShowWindow(SW_HIDE). But it doesn't work because the db engine window starts as minimized. Anyone have any idea?
0
Comment
Question by:shibai
  • 2
  • 2
5 Comments
 
LVL 8

Expert Comment

by:VinExpert
ID: 2702797
Hi,

Follow the following steps.

1. Declare the global callback function as
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM     lparam);

2. Wherever U want to kill explorer call the following function
EnumWindows((WNDENUMPROC)EnumWindowsProc , 0);

3. Write the callback function as

BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lparam)
{
//Declare storage for Window Title
char l_chTitle[300];
memset(l_chTitle, 0, 300);
::GetWindowText(hwnd, l_chTitle, 200);

CString l_strTitle = l_chTitle;

//Is it database engine!?
if(l_strTitle.Find("database - ") != -1) //see bellow
{
//Yes Then Close it.
PostMessage(hwnd, WM_SHOWWINDOW, FALSE, 0);
}

return 1;
}

Here I am comparing with the titke text 'database'. But what U have to do is, just note the title text of that window, then compare with that.

Thats it.

Hope it helps.

VinExpert
0
 

Author Comment

by:shibai
ID: 2704428
Your code doesn't work. It doesn't even work for windows that are not minimized. The way I tried, finding the window then calling ShowWindow(SW_HIDE), works for windows not minimized, but doesn't work for minimized windows.
0
 
LVL 8

Accepted Solution

by:
VinExpert earned 200 total points
ID: 2705309
Hi,

Yeap :(, I thought, it will work. Sorry, But PostMessage works perfectly for the WM_CLOSE, but not for the WM_SHOWWINDOW.

Instead of the PostMessage call, put the following code. It will work fine though it is minimised.

CWnd *wnd = new CWnd;
wnd->FromHandle(hwnd);
wnd->m_hWnd = hwnd;
wnd->ShowWindow(SW_HIDE);
if(wnd)
{
delete wnd;
wnd = NULL;
}

Hope this helps.

VinExpert
0
 
LVL 3

Expert Comment

by:shaig
ID: 2707851
Can you restore the window for a brief moment and then hide it?
0
 

Author Comment

by:shibai
ID: 2707906
It does work. Thanks.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Introduction: Hints for the grid button.  Nested classes, templated collections.  Squash that darned bug! Continuing from the sixth article about sudoku.   Open the project in visual studio. First we will finish with the SUD_SETVALUE messa…
Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…

863 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

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now