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Using C Sharp to make application flash at bottom of screen?

At the bottom of a windows screen are those rectangular boxes for each
application. Sometimes they flash to alert the user that somethign has
happened. How can I make my own C Sharp applications flash?
Aug 19 '08 #1
3 1781
use the following code in your form class .... or change it as needed.


private void FlashIt()
fi.cbSize = (uint)System.Ru ntime.InteropSe rvices.Marshal. SizeOf(fi);
fi.hwnd = Handle;
fi.dwFlags = FLASHW_TRAY;
fi.uCount = 3;
fi.dwTimeout = 0;
FlashWindowEx(r ef fi);

[DllImport("user 32.dll")]
[return: MarshalAs(Unman agedType.Bool)]
static extern bool FlashWindowEx(r ef FLASHWINFO pwfi);

[StructLayout(La youtKind.Sequen tial)]
public struct FLASHWINFO
public UInt32 cbSize;
public IntPtr hwnd;
public UInt32 dwFlags;
public UInt32 uCount;
public UInt32 dwTimeout;

//Stop flashing. The system restores the window to its original state.
public const UInt32 FLASHW_STOP = 0;
//Flash the window caption.
public const UInt32 FLASHW_CAPTION = 1;
//Flash the taskbar button.
public const UInt32 FLASHW_TRAY = 2;
//Flash both the window caption and taskbar button.
//This is equivalent to setting the FLASHW_CAPTION | FLASHW_TRAY flags.
public const UInt32 FLASHW_ALL = 3;
//Flash continuously, until the FLASHW_STOP flag is set.
public const UInt32 FLASHW_TIMER = 4;
//Flash continuously until the window comes to the foreground.
public const UInt32 FLASHW_TIMERNOF G = 12;
Aug 19 '08 #2
Import the windows user32 dll function:

[DllImport("user 32.dll")]
static extern bool FlashWindow(Int Ptr hwnd, bool bInvert);
then in a method put:
FlashWindow(thi s.Handle, true);
Ciaran O''Donnell
"Bernard.Mangay " wrote:
At the bottom of a windows screen are those rectangular boxes for each
application. Sometimes they flash to alert the user that somethign has
happened. How can I make my own C Sharp applications flash?
Aug 19 '08 #3
thanks guys!
Aug 19 '08 #4

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