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Aug 9th, 2005

How to make a window an active window(focussed window)

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On windows operating system How can we make a window an active window (focussed window) using c/c++ programming.
I tried using SetForegroundWindow() but it is not working.
AllowSetForegroundWindow() will work on Windows XP?

Any how please give me an idea regaurding this.

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ravinderreddy

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Aug 9th, 2005

Re: How to make a window an active window(focussed window)

before you call that you must satisfy the conditions of SetForegroundWindow. This is easiest if you use SystemParametersInfo() to change the value of SPI_SETFOREGROUNDLOCKTIMEOUT to 0. Then SetForegroundWindow will work.

Stoned_coder

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Aug 9th, 2005

Re: How to make a window an active window(focussed window)

oh yeah dont forget to set it back to what it was after the call to SetForegroundWindow() so that the OS behaves as it should.

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Aug 9th, 2005

Re: How to make a window an active window(focussed window)

The SetActiveWindow function might also come in handy.

Dante Shamest

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Aug 11th, 2005

Re: How to make a window an active window(focussed window)

Your pm box is full ravin.
You may have an outdated sdk which is why this might not work for you. Try downloading latest platform sdk.

SPI_GETFOREGROUNDLOCKTIMEOUT is #defined as 0x2000
SPI_SETFOREGROUNDLOCKTIMEOUT is #defined as 0x2001

So you could try this...

C++ Syntax (Toggle Plain Text)
DWORD timeout;
SystemParametersInfo(0x2000,0,&timeout,0);
SystemParametersInfo(0x2001,0,0,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);
SetForegroundWindow(hwnd);
SystemParametersInfo(0x2001,0,&timeout,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);
DWORD timeout;
SystemParametersInfo(0x2000,0,&timeout,0);
SystemParametersInfo(0x2001,0,0,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);
SetForegroundWindow(hwnd);
SystemParametersInfo(0x2001,0,&timeout,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);

Stoned_coder

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