Move a window on keypress + mouse (like linux ALT + mouse down)

Question

Simple, i want to move a windows pressing ALT+MOUSE, like linux os (ALT+drag).

It\'s possible to pass a win32 api (move api) to the windows interested clicking on it?

Answer 1

You can do this by trapping the WM_NCHITTEST message that Windows sends to see what area of the window got clicked. You can fool it by returning HTCAPTION and it will dutifully perform the mouse actions you'd normally get when clicking the caption of a window. Including moving the window. Paste this code into your form:

    protected override void WndProc(ref Message m) {
        base.WndProc(ref m);
        // Trap WM_NCHITTEST when the ALT key is down
        if (m.Msg == 0x84 && (Control.ModifierKeys == Keys.Alt)) {
            // Translate HTCLIENT to HTCAPTION
            if (m.Result == (IntPtr)1) m.Result = (IntPtr)2;
        }
    }