public static void EnableShield(Button button, bool enableShield)
{
IntPtr hWnd = button.Handle;
SafeNativeMethods.SendMessageW(
hWnd,
NativeConstants.BCM_SETSHIELD,
IntPtr.Zero,
enableShield ? new IntPtr(1) : IntPtr.Zero);
GC.KeepAlive(button);
}
public static void ShowComboBox(ComboBox comboBox, bool show)
{
IntPtr hWnd = comboBox.Handle;
SafeNativeMethods.SendMessageW(
hWnd,
NativeConstants.CB_SHOWDROPDOWN,
show ? new IntPtr(1) : IntPtr.Zero,
IntPtr.Zero);
GC.KeepAlive(comboBox);
}
/// <summary>
/// Sets the control's redraw state.
/// </summary>
/// <param name="control">The control whose state should be modified.</param>
/// <param name="enabled">The new state for redrawing ability.</param>
/// <remarks>
/// Note to implementors: This method is used by SuspendControlPainting() and ResumeControlPainting().
/// This may be implemented as a no-op.
/// </remarks>
private static void SetControlRedrawImpl(Control control, bool enabled)
{
SafeNativeMethods.SendMessageW(control.Handle, NativeConstants.WM_SETREDRAW, enabled ? new IntPtr(1) : IntPtr.Zero, IntPtr.Zero);
GC.KeepAlive(control);
}
