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.NET Forum / .NET Framework / Compact Framework / August 2007ForeGroundWindow Issue
Hi all, Does anybody know of a way to have a C# PPC/WM application receive notification when a window is brought to the foreground. Catching the forms Deactivate and LostFocus events are not good enough. I need to be able to globally catch the event when an window is brought to the foreground. Currently I'm doing this with GetForegroundWindow() and a Timer checking to see if the current foreground window is different then the last time I checked. This seems extremely inefficient so I was hoping that maybe I could register an event or use WaitForSignalObject if I knew the event name. Any help would be extremely appreciated! Thanks, Jerod There's no event fired. That event would be constantly firing, if there were. What are you trying to achieve with this (boils down to why you need to know that a change in the foreground window is being made)? There might be another way or a different sort of suggestion that we could offer. Paul T. > Hi all, > [quoted text clipped - 12 lines] > Thanks, > Jerod On Aug 29, 3:58 pm, "Paul G. Tobey [eMVP]" <p space tobey no spam AT no instrument no spam DOT com> wrote: > There's no event fired. That event would be constantly firing, if there > were. What are you trying to achieve with this (boils down to why you need [quoted text clipped - 19 lines] > > Thanks, > > Jerod I'm trying to mimic HHPs EZMenu program. (Looks and acts like the Programs menu but the start icon must be hidden from ALL programs.) My requirement is that the task bar must be visible, but the start icon hidden. It is also not sufficient enough for me to make the window full screen. I'm referring to removing the start icon because it essentially locks the task bar. Plus I don't want the user thinking that it is locked up if I just disable the task bar because the start icon is still visible. I'm afraid that I'm not familiar with it. It's a shell replacement (explorer.exe is *not* in the registry Init keys while this program is in charge)? I can certainly see how to accomplish *that* with a clone of the explorer and suitable changes to the code (native, of course). So, you need to know who is in front because you want to indicate on your taskbar who is active by showing the 'button' in the down state or something of that sort? It appears to me that the window manager automatically notifies the shell of those transitions, but not any other applications. The mechanism for asking for them is pretty opaque... Paul T. > On Aug 29, 3:58 pm, "Paul G. Tobey [eMVP]" <p space tobey no spam AT > no instrument no spam DOT com> wrote: [quoted text clipped - 32 lines] > that it is locked up if I just disable the task bar because the start > icon is still visible. I've just found the code in the window manager that does that and it *does* only send the message to the task bar. Seems like that's probably the best way to go (replace the shell), if this is intended for a device where you are in control of what should be installed on the device at all times. Paul T. > I'm afraid that I'm not familiar with it. It's a shell replacement > (explorer.exe is *not* in the registry Init keys while this program is in [quoted text clipped - 45 lines] >> that it is locked up if I just disable the task bar because the start >> icon is still visible. Ah, and there's where the taskbar is registered with the window manager, RegisterTaskBar(). Sorry, only one task bar allowed per system (and there are restrictions mentioned in the help). Paul T. > I've just found the code in the window manager that does that and it > *does* only send the message to the task bar. Seems like that's probably [quoted text clipped - 54 lines] >>> that it is locked up if I just disable the task bar because the start >>> icon is still visible. 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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