GetWindow

[yyf]

How to use "GetWindow" in C#.net? Thanks in advance!

[Judah Gabriel Himango]

someForm.Owner The graveyards are filled with indispensible men.

[Heath Stewart]

Only if your nCmd parameter to GetWindow would be GW_OWNER.

Microsoft MVP, Visual C# My Articles

[Heath Stewart]

You'll have to P/Invoke it like so:

[DllImport("user32.dll")]
private static extern IntPtr GetWindow(
IntPtr hWnd,
[MarshalAs(UnmanagedType.U4)] int nCmd);
private const int GW_HWNDFIRST = 0;
private const int GW_HWNDLAST = 1;
private const int GW_HWNDNEXT = 2;
private const int GW_HWNDPREV = 3;
private const int GW_OWNER = 4;
private const int GW_CHILD = 5;

You could define those constants as a enum, then change the declaration from int to your enum in GetWindow (leave the MarshalAsAttribute as is) if you want, but it really makes no difference if these are private and you'll be the only one calling these. You can get the window handle from Control.Handle, from which all controls (including Form) derive. You can use Control.FromHandle with the return IntPtr to get the control, which you can cast to whatever you like (like a Form).

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[yyf]

Thanks a lot!