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C# How to drag Form from picturebox or panel?

My problem is simple, I can't drag a window/form from picturebox or panel that is similar to custom toolbar/border.
Basicly you can drag only from background of the form, but not from any control.
Hope you understand my problem. If needed I can make video or pictures.
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case 0x84://Can move window if borders are off.
base.WndProc(ref m);
if ((int)m.Result == 0x1)
m.Result = (IntPtr)0x2;
return;
case 0x00A3: m.Result = IntPtr.Zero; return; //Double click won't zoom in.
}
base.WndProc(ref m);
}

Winform, mouse click out of popup

I have a small popup window , and I'd like to trigger event when I click the mouse outside of the window bound.
I've tried initiating it on OnMouseClick, and check if the mouse cursor is out of the pop up bounds, but it doesn't seem to trigger out of the popup bounds.

For discussion:
public partial class FrmPopup : Form {
public FrmPopup() {
InitializeComponent();
}
const uint WM_NCACTIVATE = 0x0086;
protected override void WndProc(ref Message m) {
base.WndProc(ref m);
if (m.Msg == WM_NCACTIVATE && m.WParam == IntPtr.Zero) {
if(!ClientRectangle.Contains(PointToClient(Control.MousePosition)) && MouseButtons == MouseButtons.Left)
label1.Text = "Clicked outside of window";
}
}
}

Have you considered the Deactivate event? This will fire when the form loses focus. This could be from a mouse click OR a context switch, but may deliver what you want.

Capturing a Click on a NativeWindow

I have a class based on the NativeWindow class and I want to be able to perform some action when the user clicks inside of it. Here is what I tried:
Code removed
However it doesn't work. Debugging suggests for some reason the message is never 0x0201 which is supposedly a left mouse button click. What's wrong with it?

I'm not sure tooltips can receive a WM_LBUTTONDOWN. You could try using the TTM_RELAYEVENT message that's meant for passing a mouse message to a tooltip control for processing, something like this:
protected override void WndProc(ref System.Windows.Forms.Message m)
{
const int TTM_RELAYEVENT = 0x407;
if (m.Msg == TTM_RELAYEVENT)
{
Message relayed = (Message)Marshal.PtrToStructure(m.LParam, typeof(Message));
if (related.Msg == WM_LBUTTONDOWN)
{
// Do something
}
}
base.WndProc(ref m);
}

C# Application-Wide Left Mouse Click Event

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 way to accomplish this?

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.

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.

Case WM_PARENTNOTIFY
Select Case Wparam
Case 513 ' WM_LBUTTODOWN
PlaySoundA
End Select
Using For Vb Or Vba

Stop toggle in treenode in winforms

i have a treeview in winforms . When i double click on treenode ,its childnode gets disappear .Again when i click on that very node its child nodes gets expand. Any body please help me out.

If you want to disable double click alltogether you will have handle directly the WM_LBUTTONDBLCLK (0x0203). To do that create a MyTreeView control inheriting from System.Windows.Forms.TreeView and override the WndProc(ref Message m) method.
public class MyTreeView : TreeView
{
protected override void WndProc(ref Message m)
{
if (m.Msg == 0x203) { m.Result = IntPtr.Zero; } //Makes the control ignore double licks`
else base.WndProc(ref m);
}
};
This solution will disable completely double clicks on all the TreeView control. If you can live with that, this solution will do.