Problem with setwindowPOS and returning from topmost to standard window position?

[turbosupramk3]

Hi Luc, Here is what I tried, but it did not work for me

private void btnTest_Click(object sender, EventArgs e)
{
SetWindowPos(this.Handle, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER);
}

And here is my pininvoke code

private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
private static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
private static readonly IntPtr HWND_TOP = new IntPtr(0);

    private const UInt32 SWP\_NOSIZE = 0x0001;
    private const UInt32 SWP\_NOMOVE = 0x0002;
    private const UInt32 SWP\_NOZORDER = 0x0004;
    private const UInt32 SWP\_NOREDRAW = 0x0008;
    private const UInt32 SWP\_NOACTIVATE = 0x0010;
    private const UInt32 SWP\_DRAWFRAME = 0x0020;
    private const UInt32 SWP\_FRAMECHANGED = 0x0020;
    private const UInt32 SWP\_SHOWWINDOW = 0x0040;
    private const UInt32 SWP\_HIDEWINDOW = 0x0080;
    private const UInt32 SWP\_NOCOPYBITS = 0x0100;
    private const UInt32 SWP\_NOOWNERZORDER = 0x0200;
    private const UInt32 SWP\_NOREPOSITION = 0x0200;
    private const UInt32 SWP\_NOSENDCHANGING = 0x0400;
    private const UInt32 SWP\_DEFERERASE = 0x2000;
    private const UInt32 SWP\_ASYNCWINDOWPOS = 0x4000;

    private const UInt32 TOPMOST\_FLAGS = SWP\_NOMOVE | SWP\_NOSIZE;
    private const UInt32 NOTOPMOST\_FLAGS = SWP\_SHOWWINDOW;

    \[DllImport("user32.dll")\]
    \[return: MarshalAs(UnmanagedType.Bool)\]
    public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

[Luc Pattyn]

Hi, two things: 1. "did not work for me" isn't helpful; what did it do? and what did it not do that you were hoping to get? please be precise. 2. why is this in a new Click handler, I was expecting this to go in the else block, as counterpart to your SetWindowPos(this.Handle, HWND_TOPMOST...). :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

[turbosupramk3]

It did not remove the topmost flag as the application is still set to topmost. I would like it to go from a topmost application back to a standard z ordered application as it is before the topmost flag is set. I was testing it with a test button for simplification is all, as soon as I get a working example I will then incorporate it into an else block

[Lost User]

The problem is that your X, Y, cx and cy values are all zero, and when you switch to NoTopMost, you have omitted the flags to keep the size and position. Edit your code and replace the definition of NOTOPMOST_FLAGS with the following.

    private const UInt32 NOTOPMOST\_FLAGS = TOPMOST\_FLAGS | SWP\_SHOWWINDOW;

Had you explained exactly what happened when you ran your code we could have helped earlier.

[turbosupramk3]

Thank you. Strangely enough when I have the above code in a separate button it removes the topmost flag correctly, but when I have it at the end of the send.keys function it does not remove the topmost flag? Any ideas on what could be causing that?

[Lost User]

turbosupramk3 wrote:

what could be causing that?

Not without seeing the actual code.

[turbosupramk3]

Sure thing, the first block is my Pininvoke code, then the standard function and then the test button. The standard function code will put the form to topmost, but will not remove the topmost flag. The test button will remove the topmost flag after the standard function places the topmost flag.

private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
private static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
private static readonly IntPtr HWND_TOP = new IntPtr(0);

    private const UInt32 SWP\_NOSIZE = 0x0001;
    private const UInt32 SWP\_NOMOVE = 0x0002;
    private const UInt32 SWP\_NOZORDER = 0x0004;
    private const UInt32 SWP\_NOREDRAW = 0x0008;
    private const UInt32 SWP\_NOACTIVATE = 0x0010;
    private const UInt32 SWP\_DRAWFRAME = 0x0020;
    private const UInt32 SWP\_FRAMECHANGED = 0x0020;
    private const UInt32 SWP\_SHOWWINDOW = 0x0040;
    private const UInt32 SWP\_HIDEWINDOW = 0x0080;
    private const UInt32 SWP\_NOCOPYBITS = 0x0100;
    private const UInt32 SWP\_NOOWNERZORDER = 0x0200;
    private const UInt32 SWP\_NOREPOSITION = 0x0200;
    private const UInt32 SWP\_NOSENDCHANGING = 0x0400;
    private const UInt32 SWP\_DEFERERASE = 0x2000;
    private const UInt32 SWP\_ASYNCWINDOWPOS = 0x4000;

    private const UInt32 TOPMOST\_FLAGS = SWP\_NOMOVE | SWP\_NOSIZE;
    private const UInt32 NOTOPMOST\_FLAGS = TOPMOST\_FLAGS | SWP\_SHOWWINDOW;

    \[DllImport("user32.dll")\]
    \[return: MarshalAs(UnmanagedType.Bool)\]
    public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

    private void btnType\_Click(object sender, EventArgs e)
    {
        try
        {
            if (tbxTagList.Text == "")
            {
                MessageBox.Show("Please enter in at least 1 tag");
                return;
            }

            int x = Convert.ToInt32(tbxXCoordinates.Text);
            int y = Convert.ToInt32(tbxYCoordinates.Text);
            SimulateMouseClick(x, y);
            foreach (char character in tbxTagList.Text)
            {

                if ((character != '\\n') && (character != '\\r'))
                {
                    SendKeys.Send(character.ToString());
                }

                if (character == '\\n')
                {
                    SendKeys.Send("{Enter}

[Lost User]

I cannot see anything wrong with that code, and the documentation does not give any further ideas.

[turbosupramk3]

Ok, thank you for trying!

[turbosupramk3]

I don't know why, but the addition of the thread sleep as pictured below fixed it?

            tbxXCoordinates.Text = "";
            tbxYCoordinates.Text = "";
            
            Thread.Sleep(250);
            SetWindowPos(this.Handle, HWND\_NOTOPMOST, 0, 0, 0, 0, NOTOPMOST\_FLAGS);

[Lost User]

I wonder if using SendKeys.SendWait Method (String) (System.Windows.Forms)[^] instead of Send might have the same effect?