DeferWindowPos function

Updates the specified multiple-window – position structure for the specified window. The function then returns a handle to the updated structure. The EndDeferWindowPos function uses the information in this structure to change the position and size of a number of windows simultaneously. The BeginDeferWindowPos function creates the structure.

MSDN : https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-deferwindowpos

C#

[DllImport("User32.dll")]

public static extern bool DeferWindowPos(

        IntPtr hWinPosInfo,
        IntPtr hWnd,           // window handle
        IntPtr hWndInsertAfter,    // placement-order handle
        int X,             // horizontal position
        int Y,             // vertical position
        int cx,            // width
        int cy,            // height
        uint uFlags);          // window positioning flags

public static class HWND

{

    public static IntPtr
    NoTopMost = new IntPtr(-2),
    TopMost = new IntPtr(-1),
    Top = new IntPtr(0),
    Bottom = new IntPtr(1);

}

public static class SWP

{

    public static readonly uint
    NOSIZE = 0x0001,
    NOMOVE = 0x0002,
    NOZORDER = 0x0004,
    NOREDRAW = 0x0008,
    NOACTIVATE = 0x0010,
    DRAWFRAME = 0x0020,
    FRAMECHANGED = 0x0020,
    SHOWWINDOW = 0x0040,
    HIDEWINDOW = 0x0080,
    NOCOPYBITS = 0x0100,
    NOOWNERZORDER = 0x0200,
    NOREPOSITION = 0x0200,
    NOSENDCHANGING = 0x0400,
    DEFERERASE = 0x2000,
    ASYNCWINDOWPOS = 0x4000;

}

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).