PostMessage does not seem to be working.
- by Vaccano
I am trying to use PostMessage to send a tab key.
Here is my code:
// This class allows us to send a tab key when the the enter key
// is pressed for the mooseworks mask control.
public class MaskKeyControl : MaskedEdit
{
// [DllImport("coredll.dll", SetLastError = true, CharSet = CharSet.Auto)]
// static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, Int32 wParam, Int32 lParam);
[return: MarshalAs(UnmanagedType.Bool)]
// I am calling this on a Windows Mobile device so the dll is coredll.dll
[DllImport("coredll.dll", SetLastError = true)]
static extern bool PostMessage(IntPtr hWnd, uint Msg, Int32 wParam, Int32 lParam);
public const Int32 VK_TAB = 0x09;
public const Int32 WM_KEYDOWN = 0x100;
protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyData == Keys.Enter)
{
PostMessage(this.Handle, WM_KEYDOWN, VK_TAB, 0);
return;
}
base.OnKeyDown(e);
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
if (e.KeyChar == '\r')
e.Handled = true;
base.OnKeyPress(e);
}
}
When I press enter the code gets called, but nothing happens. Then I press TAB and it works fine. (So there is something wrong with my sending of the Tab Message.)
