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c# Programming Glossary: event_system_foregroundDetect active window changed using C# without polling http://stackoverflow.com/questions/4372055/detect-active-window-changed-using-c-sharp-without-polling WinEventProc IntPtr m_hhook SetWinEventHook EVENT_SYSTEM_FOREGROUND EVENT_SYSTEM_FOREGROUND IntPtr.Zero dele 0 0 WINEVENT_OUTOFCONTEXT.. IntPtr m_hhook SetWinEventHook EVENT_SYSTEM_FOREGROUND EVENT_SYSTEM_FOREGROUND IntPtr.Zero dele 0 0 WINEVENT_OUTOFCONTEXT delegate void WinEventDelegate.. const uint WINEVENT_OUTOFCONTEXT 0 private const uint EVENT_SYSTEM_FOREGROUND 3 DllImport user32.dll static extern IntPtr GetForegroundWindow..
Is there Windows system event on active window changed? http://stackoverflow.com/questions/4407631/is-there-windows-system-event-on-active-window-changed can use SetWinEventHook function. hEvent SetWinEventHook EVENT_SYSTEM_FOREGROUND EVENT_SYSTEM_FOREGROUND NULL WinEventProcCallback 0 0 WINEVENT_OUTOFCONTEXT.. function. hEvent SetWinEventHook EVENT_SYSTEM_FOREGROUND EVENT_SYSTEM_FOREGROUND NULL WinEventProcCallback 0 0 WINEVENT_OUTOFCONTEXT WINEVENT_SKIPOWNPROCESS..
asynchronously GetForegroundWindow via SendMessage or something? http://stackoverflow.com/questions/8840926/asynchronously-getforegroundwindow-via-sendmessage-or-something is probably your best bet you can listen to either the EVENT_SYSTEM_FOREGROUND to listen for foreground window changes or even EVENT_OBJECT_FOCUS.. IntPtr hWinEventHook Constants from winuser.h const uint EVENT_SYSTEM_FOREGROUND 3 const uint WINEVENT_OUTOFCONTEXT 0 Need to ensure delegate.. threads on current desktop... IntPtr hhook SetWinEventHook EVENT_SYSTEM_FOREGROUND EVENT_SYSTEM_FOREGROUND IntPtr.Zero procDelegate 0 0 WINEVENT_OUTOFCONTEXT..
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