How to get a right click mouse event Changing EventArgs to MouseEventArgs causes an error in Form1Designer

Question

I have a method to detect the left click event that visual studio made by double clicking on the form   private void pictureBox1 Click object sender  EventArgs e        MessageBox Show  Left click        I want to have a right-click event by right-clicking on the same object   I read online that you can use this switch   private void pictureBox1 Click object sender  EventArgs e        if  e Button    System Windows Forms MouseButtons Right  MessageBox Show  Right click         if  e Button    System Windows Forms MouseButtons Left  MessageBox Show  Left click         The trouble is that when I do e Button it has has yields an error error      System EventArgs does not contain a definition for Button       So I fix this by changing the EventArgs e to MouseEventArgs e  But then there is a new error in Form1Designer where the event line is   this pictureBox1 Click    new System EventHandler this pictureBox1 Click     The error says      No overload for pictureBox1 Click matches delegate System EventHandler   How do I fix this   Thanks for reading

User · Answer

Use MouseClick event instead of Click

User · Answer

See the code below  this is the complete code about getting a mouse event rightclick  leftclick  And you can DIY this code and make it on your own   using System   using System Drawing   using System Windows Forms   using System Runtime InteropServices    namespace Demo mousehook csdn       public partial class Form1   Form               public Form1                         InitializeComponent                       MouseHook mh           private void Form1 Load object sender  EventArgs e                        mh   new MouseHook                mh SetHook                mh MouseMoveEvent    mh MouseMoveEvent              mh MouseClickEvent    mh MouseClickEvent              mh MouseDownEvent    mh MouseDownEvent              mh MouseUpEvent    mh MouseUpEvent                    private void mh MouseDownEvent object sender  MouseEventArgs e                        if  e Button    MouseButtons Left                                richTextBox1 AppendText  Left Button Press n                              if  e Button    MouseButtons Right                                richTextBox1 AppendText  Right Button Press n                                     private void mh MouseUpEvent object sender  MouseEventArgs e                         if  e Button    MouseButtons Left                                richTextBox1 AppendText  Left Button Release n                              if  e Button    MouseButtons Right                                richTextBox1 AppendText  Right Button Release n                                     private void mh MouseClickEvent object sender  MouseEventArgs e                          MessageBox Show e X    -    e Y               if  e Button    MouseButtons Left                                string sText         e X ToString           e Y ToString                          label1 Text   sText                                   private void mh MouseMoveEvent object sender  MouseEventArgs e                        int x   e Location X              int y   e Location Y              textBox1 Text   x                   textBox2 Text   y                         private void Form1 FormClosed object sender  FormClosedEventArgs e                        mh UnHook                       private void Form1 FormClosed 1 object sender  FormClosedEventArgs e                        mh UnHook                       private void richTextBox1 TextChanged object sender  EventArgs e                                  public class Win32Api                StructLayout LayoutKind Sequential           public class POINT                       public int x              public int y                     StructLayout LayoutKind Sequential           public class MouseHookStruct                       public POINT pt              public int hwnd              public int wHitTestCode              public int dwExtraInfo                    public delegate int HookProc int nCode  IntPtr wParam  IntPtr lParam            DllImport  user32 dll   CharSet   CharSet Auto  CallingConvention   CallingConvention StdCall           public static extern int SetWindowsHookEx int idHook  HookProc lpfn  IntPtr hInstance  int threadId            DllImport  user32 dll   CharSet   CharSet Auto  CallingConvention   CallingConvention StdCall           public static extern bool UnhookWindowsHookEx int idHook            DllImport  user32 dll   CharSet   CharSet Auto  CallingConvention   CallingConvention StdCall           public static extern int CallNextHookEx int idHook  int nCode  IntPtr wParam  IntPtr lParam              public class MouseHook               private Point point          private Point Point                       get   return point                set                               if  point    value                                        point   value                      if  MouseMoveEvent    null                                                var e   new MouseEventArgs MouseButtons None  0  point X  point Y  0                           MouseMoveEvent this  e                                                                           private int hHook          private const int WM MOUSEMOVE   0x200          private const int WM LBUTTONDOWN   0x201          private const int WM RBUTTONDOWN   0x204          private const int WM MBUTTONDOWN   0x207          private const int WM LBUTTONUP   0x202          private const int WM RBUTTONUP   0x205          private const int WM MBUTTONUP   0x208          private const int WM LBUTTONDBLCLK   0x203          private const int WM RBUTTONDBLCLK   0x206          private const int WM MBUTTONDBLCLK   0x209          public const int WH MOUSE LL   14          public Win32Api HookProc hProc          public MouseHook                         this Point   new Point                      public int SetHook                         hProc   new Win32Api HookProc MouseHookProc               hHook   Win32Api SetWindowsHookEx WH MOUSE LL  hProc  IntPtr Zero  0               return hHook                    public void UnHook                         Win32Api UnhookWindowsHookEx hHook                     private int MouseHookProc int nCode  IntPtr wParam  IntPtr lParam                        Win32Api MouseHookStruct MyMouseHookStruct    Win32Api MouseHookStruct Marshal PtrToStructure lParam  typeof Win32Api MouseHookStruct                if  nCode  lt  0                                return Win32Api CallNextHookEx hHook  nCode  wParam  lParam                             else                               if  MouseClickEvent    null                                        MouseButtons button   MouseButtons None                      int clickCount   0                      switch   Int32 wParam                                                case WM LBUTTONDOWN                              button   MouseButtons Left                              clickCount   1                              MouseDownEvent this  new MouseEventArgs button  clickCount  point X  point Y  0                                break                          case WM RBUTTONDOWN                              button   MouseButtons Right                              clickCount   1                              MouseDownEvent this  new MouseEventArgs button  clickCount  point X  point Y  0                                break                          case WM MBUTTONDOWN                              button   MouseButtons Middle                              clickCount   1                              MouseDownEvent this  new MouseEventArgs button  clickCount  point X  point Y  0                                break                          case WM LBUTTONUP                              button   MouseButtons Left                              clickCount   1                              MouseUpEvent this  new MouseEventArgs button  clickCount  point X  point Y  0                                break                          case WM RBUTTONUP                              button   MouseButtons Right                              clickCount   1                              MouseUpEvent this  new MouseEventArgs button  clickCount  point X  point Y  0                                break                          case WM MBUTTONUP                              button   MouseButtons Middle                              clickCount   1                              MouseUpEvent this  new MouseEventArgs button  clickCount  point X  point Y  0                                break                                             var e   new MouseEventArgs button  clickCount  point X  point Y  0                       MouseClickEvent this  e                                     this Point   new Point MyMouseHookStruct pt x  MyMouseHookStruct pt y                   return Win32Api CallNextHookEx hHook  nCode  wParam  lParam                                    public delegate void MouseMoveHandler object sender  MouseEventArgs e           public event MouseMoveHandler MouseMoveEvent           public delegate void MouseClickHandler object sender  MouseEventArgs e           public event MouseClickHandler MouseClickEvent           public delegate void MouseDownHandler object sender  MouseEventArgs e           public event MouseDownHandler MouseDownEvent           public delegate void MouseUpHandler object sender  MouseEventArgs e           public event MouseUpHandler MouseUpEvent             You can download the demo And the tutorial here   C  Mouse Hook Demo

User · Answer

You should introduce a cast inside the click event handler  MouseEventArgs me    MouseEventArgs  e

User · Answer

For me neither the MouseClick or Click event worked  because the events  simply  are not called when you right click  The quick way to do it is    private void button1 MouseUp object sender  MouseEventArgs e             if  e Button    MouseButtons Right                          do something here                   else  left or middle click                         do something here                You can modify that to do exactly what you want depended on the arguments  values   WARNING  There is one catch with only using the mouse up event  if you mousedown on the control and then you move the cursor out of the control to release it  you still get the event fired  In order to avoid that  you should also make sure that the mouse up occurs within the control in the event handler  Checking whether the mouse cursor coordinates are within the control s rectangle before you check the buttons will do it properly

User · Answer

You need MouseClick instead of Click event handler  reference   switch  e Button         case MouseButtons Left         Left click     break       case MouseButtons Right         Right click     break

User · Answer

Use MouseDown event  if e Button    MouseButton Right

User · Answer

This would definitely help Many   private void axWindowsMediaPlayer1 ClickEvent object sender  AxWMPLib  WMPOCXEvents ClickEvent e                if e nButton  2                        contextMenuStrip1 Show MousePosition                       e nbutton  2   is like   e button  MouseButtons Right

[c#] How to get a right click mouse event? Changing EventArgs to MouseEventArgs causes an error in Form1Designer?

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