I want to play a sound when the left mouse button is clicked anywhere in my form without having to place Mouse click events on every single control in the form. Is there a w
Case WM_PARENTNOTIFY Select Case Wparam Case 513 ' WM_LBUTTODOWN PlaySoundA End Select
Using For Vb Or Vba
This should do the trick
const int WM_PARENTNOTIFY = 0x210;
const int WM_LBUTTONDOWN = 0x201;
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_LBUTTONDOWN || (m.Msg == WM_PARENTNOTIFY && (int)m.WParam == WM_LBUTTONDOWN))
DoIt();
base.WndProc(ref m);
}
This project may be overkill for your needs (since it hooks global mouse events, not just ones on your form), but I think it shows the basics of what you need.
You can detect the Windows notification before it is dispatched to the control with the focus with the IMessageFilter interface. Make it look similar to this:
public partial class Form1 : Form, IMessageFilter {
public Form1() {
InitializeComponent();
Application.AddMessageFilter(this);
this.FormClosed += delegate { Application.RemoveMessageFilter(this); };
}
public bool PreFilterMessage(ref Message m) {
// Trap WM_LBUTTONDOWN
if (m.Msg == 0x201) {
System.Diagnostics.Debug.WriteLine("BEEP!");
}
return false;
}
}
This works for any form in your project, not just the main one.