Is it possible to display a wpf window without an icon in the title bar?

user_170913 0
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As we all know, if the icon for a wpf window is undefined then the default icon is displayed. I want to display a window without any icon in the title bar. I realise that I could use a blank image, however this would cause the text in the title bar to be offset to the right.

Does anyone know of a way to completely remove the icon?

(I tried searching for a similar question but couldn't find anything.)

application-icon titlebar dialog xaml wpf
7 Answers

Add the following code to the main class of your Window to remove the maximize and minimize buttons, and hide the icon.

private const uint WS_MINIMIZEBOX = 0x00020000;
private const uint WS_MAXIMIZEBOX = 0x00010000;
private const int GWL_STYLE = -16;
private const int GWL_EXSTYLE = -20;
private const int SWP_NOSIZE = 0x0001;
private const int SWP_NOMOVE = 0x0002;
private const int SWP_NOZORDER = 0x0004;
private const int SWP_FRAMECHANGED = 0x0020;
private const int WM_SYSCOMMAND = 0x0112;
private const int WM_SETICON = 0x0080;
private const int WS_EX_DLGMODALFRAME = 0x0001;

[DllImport("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int wMsg, IntPtr wParam, IntPtr lParam);

[DllImport("user32.dll")]
private static extern uint GetWindowLong(IntPtr hwnd, int index);

[DllImport("user32.dll")]
private static extern int SetWindowLong(IntPtr hwnd, int index, uint newStyle);

[DllImport("user32.dll")]
private static extern bool SetWindowPos(IntPtr hwnd, IntPtr hwndInsertAfter, int x, int y, int width, int height, uint flags);

protected override void OnSourceInitialized(EventArgs e)
{
    base.OnSourceInitialized(e);
    
    IntPtr hwnd = new System.Windows.Interop.WindowInteropHelper(this).Handle;
    uint styles = GetWindowLong(hwnd, GWL_STYLE);

    // Remove the maximize and minimize buttons
    styles &= 0xFFFFFFFF ^ (WS_MINIMIZEBOX | WS_MAXIMIZEBOX);
    SetWindowLong(hwnd, GWL_STYLE, styles);
    
    // Change to dialog modal - necessary for the final step to work!
    styles = GetWindowLong(hwnd, GWL_EXSTYLE);
    styles |= WS_EX_DLGMODALFRAME;
    SetWindowLong(hwnd, GWL_EXSTYLE, styles);

    SetWindowPos(hwnd, IntPtr.Zero, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
    ((HwndSource)PresentationSource.FromVisual(this)).AddHook(HelpButtonHook);

    // Remove the icon
    SendMessage(hwnd, WM_SETICON, new IntPtr(1), IntPtr.Zero);
    SendMessage(hwnd, WM_SETICON, IntPtr.Zero, IntPtr.Zero);
}
user_13691100
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