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.NET Forum / Languages / Managed C++ / March 2005running an application in foreground?
Hello, I have an executable file lanuched from another application. is there a way to make thie executable file foreground if it is launched from other application? Thanks. > I have an executable file lanuched from another application. > is there a way to make thie executable file foreground if it is launched > from other application? Thanks. Check the docs for SwitchToThisWindow() http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/win dowsuserinterface/windowing/windows/windowreference/windowfunctions/switchtothis window.asp and read the remarks section for the caveats. Regards, Will >>I have an executable file lanuched from another application. >>is there a way to make thie executable file foreground if it is launched [quoted text clipped - 5 lines] > > and read the remarks section for the caveats. Will, Thanks for the help. I also find the function SetForegroundWindow(). My problem is that a1.exe launches a2.exe, and then a2.exe launches a3.exe. However, a3.exe cannot be displayed immediately. Only after a2.exe is terminated, then a3.exe then can be displayed. I think SetForegroundWindow() or SwitchToThisWindow() might be helpful, but I am not sure if I should put this function in a3.exe or a2.exe? Thanks. > Regards, > Will > Thanks for the help. You are welcome. > I also find the function SetForegroundWindow(). It works on '95 and NT4. It has been intentionally crippled on 98/Me/2K/XP and 2K+3. > My problem is that a1.exe launches a2.exe, and then a2.exe > launches a3.exe. > However, a3.exe cannot be displayed immediately. > Only after a2.exe is terminated, then a3.exe then can be displayed. > I think SetForegroundWindow() or SwitchToThisWindow() might be helpful, > but I am not sure if I should put this function in a3.exe or a2.exe? If you must, try calling SwitchToThisWindow() in a3 passing the handle of its main window. Note that many people, including me, will immediately uninstall an application which "steals" the forreground. The bad behavior of so many applications that did this is the reason why SetForegroundWindow() has been crippled and why SwitchToThisWindow() is on its way out. Regards, Will >>Thanks for the help. > [quoted text clipped - 19 lines] > applications that did this is the reason why SetForegroundWindow() has been > crippled and why SwitchToThisWindow() is on its way out. I have an applicaiton a1.exe calls a2.exe, a2.exe calls a3.exe. I have to kill a1.exe and then a3.exe will run. I added SwitchToThisWindow() on a3.exe, I still need to kill a1.exe to get a3.exe to run. Not sure how to fix this problem. If used notepad.exe to replace a3.exe, I find that I can run a3.exe without the need to kill a1.exe. Not sure if there are some tricks over there? Thanks. > Regards, > Will > Hello, > > I have an executable file lanuched from another application. > is there a way to make thie executable file foreground if it is launched > from other application? Thanks. http://216.239.59.104/search?q=cache:R77OL2MU0KMJ:www.etree.com/tech/Articles/at tachthreadinput.pdf+foreground+GetWindowThreadProcessId&hl=sv The trick is to use GetWindowThreadProcessId and AttachThreadInput /Fredrik > Hello, > > I have an executable file lanuched from another application. > is there a way to make thie executable file foreground if it is launched > from other application? Thanks. +void ReallySetForegroundWindow( HWND ahWnd ) +{ + DWORD foregroundThreadID; // foreground window thread + DWORD ourThreadID; // our active thread + static char foo[1024]; + HWND h = GetForegroundWindow(); + + // If the window is in a minimized state, maximize now + if (GetWindowLong(ahWnd, GWL_STYLE) & WS_MINIMIZE) + { + ShowWindow(ahWnd, SW_MAXIMIZE); + UpdateWindow(ahWnd); + } + + // Check to see if we are the foreground thread + foregroundThreadID = GetWindowThreadProcessId(GetForegroundWindow(), NULL); + ourThreadID = GetCurrentThreadId(); + + // If not, attach our thread's 'input' to the foreground thread's + if (foregroundThreadID != ourThreadID) + AttachThreadInput(foregroundThreadID, ourThreadID, TRUE); + + // Bring our window to the foreground + SetForegroundWindow(ahWnd); + + // Set focus. + SetFocus( ahWnd ); + + // If we attached our thread, detach it now + if (foregroundThreadID != ourThreadID) + AttachThreadInput(foregroundThreadID, ourThreadID, FALSE); + + // Force our window to redraw + InvalidateRect(ahWnd, NULL, TRUE); +}/Fredrik >>Hello, >> [quoted text clipped - 38 lines] > + InvalidateRect(ahWnd, NULL, TRUE); > +}/Fredrik I tried the above code, and the function SwitchToThisWindow(). It doesn't help. My problem is that I have a1.exe calls a2.exe, and a2.exe calls a3.exe. a3.exe is a GUI application, it is not started untill I kills a1.exe. I am not sure if there is a way to bring a3.exe to the foreground and make it run without killing a1.exe? Thanks. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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