It is possible to enable and disable this behavior in WPF by calling three older functions using the PInvoke API.
The three functions involved are
- GlobalAddAtom
- SetProp
- GetProp
This is part of a class that disables the right click behavior for the main application window
//Include these name spaces
using System.Runtime.InteropServices;
using System.Windows.Interop;
public partial class Window1 : Window
{
[DllImport("Kernel32.dll")]
static extern ushort GlobalAddAtom(string lpString);
//ATOM GlobalAddAtom(LPCTSTR lpString);
[DllImport("Kernel32.dll")]
static extern ushort GlobalDeleteAtom(ushort nAtom);
//ATOM GlobalDeleteAtom(ATOM nAtom);
[DllImport("user32.dll")]
static extern int SetProp(IntPtr hWnd, string lpString, int hData);
//BOOL SetProp(HWND hWnd, LPCTSTR lpString, HANDLE hData);
[DllImport("user32.dll")]
static extern int RemoveProp(IntPtr hWnd, string lpString);
//HANDLE RemoveProp(HWND hWnd, LPCTSTR lpString);
ushort pressAndHoldAtomID;
string pressAndHoldAtomStr = "MicrosoftTabletPenServiceProperty";
IntPtr mainWindowHandle;
private void Window_ContentRendered(object sender, EventArgs e) {
// Get the Tablet PC atom ID
pressAndHoldAtomID = GlobalAddAtom(pressAndHoldAtomStr);
if (pressAndHoldAtomID == 0)
MessageBox.Show("GlobalAddAtom failed");
else {
//the next function must be called after the window has
// been rendered, otherwise it returns 0
mainWindowHandle =new
WindowInteropHelper(Application.Current.MainWindow).Handle;
int result = SetProp(
mainWindowHandle, pressAndHoldAtomStr, 1);
}
}
private void Window_Closing(
object sender, System.ComponentModel.CancelEventArgs e)
{
if (pressAndHoldAtomID != 0) {
int result = RemoveProp(
mainWindowHandle, pressAndHoldAtomStr);
GlobalDeleteAtom(pressAndHoldAtomID);
}
}
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