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Forward/Backward navigation with the mouse thumb buttons for Visual Studio 2008 (C++)

, 28 Sep 2008 GPL3 26.1K 272 13
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Forward/backward navigation with the mouse thumb buttons for Visual Studio 2008 (C++).

Introduction

For most programs, users can use the "thumb-buttons" of the mouse to navigate forwards or backwards. This add-in will implement this feature in Visual Studio 2008 C++. (C# has this feature built-in).

Example usage

  1. Jump to a function definition (right click on the function name, "Go to definition").
  2. Jump back using the "backward button" of your mouse.

A look inside the code

The API for Visual Studio add-ins do not provide the possibility to get informed if a mouse button is pressed inside the Visual Studio window. It is necessary to use a Hook to achieve this:

private void InitHook()
{
  this.MouseProcDelegate = new HookProc(this.MouseProc);
  uint id = GetCurrentThreadId();
  hhook=SetWindowsHookEx(WH_MOUSE, 
        this.MouseProcDelegate, IntPtr.Zero, id);
}

The InitHook() function is called if Visual Studio is loading an add-in (on VS start). The hook is only attached to the thread whose the thread-ID is returned by GetCurrentThreadId(). The hook will receive the mouse events before Visual Studio does. Another possibility could be a ShellHook (WH_SHELL) (HSHELL_APPCOMMAND with the APPCOMMAND_BROWSER_BACKWARD and APPCOMMAND_BROWSER_FORWARD events). But, this does not work well (the event is not triggered under all circumstances).

The Hook will call the MouseProc function:

 private int MouseProc(int code, IntPtr wParam, ref MOUSEHOOKSTRUCTEX lParam)
    {
      try
      {
        if (code != HC_ACTION)
        {
          return CallNextHookEx(hhook, code, wParam, ref lParam);
        }

        if (wParam.ToInt32() == WM_XBUTTONUP)
        {
          switch (HiWord(lParam.mouseData))
          {
            case XBUTTON1:
              Debug.Write("mouse back button\n");
              _applicationObject.ExecuteCommand("View.NavigateBackward", "");
            return 1;

            case XBUTTON2:
              Debug.Write("mouse forward button\n");
              _applicationObject.ExecuteCommand("View.NavigateForward", "");
            return 1;
           }

        }

      }
      catch
      {

      }

      return CallNextHookEx(hhook, code, wParam, ref lParam);
    }

MOUSEHOOKSTRUCTEX is an updated version of MOUSEHOOKSTRUCT which supports the extra mouse buttons. If the wParam is WM_XBUTTONUP, one of the mouse thumb-buttons was released. You can find out which one was released using the hi-word of lParam.mouseData:

  • XBUTTON1: backward button
  • XBUTTON2: forward button

Finally, ExecuteCommand() is used to call the navigation functionality of Visual Studio:

_applicationObject.ExecuteCommand("View.NavigateBackward", "");
_applicationObject.ExecuteCommand("View.NavigateForward", "");

History

  • 0.2: Checks if the mouse button is pressed inside a C++ editor window.
  • 0.1: Initial version.

License

This article, along with any associated source code and files, is licensed under The GNU General Public License (GPLv3)

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About the Author

Jochen Baier
Germany Germany
No Biography provided

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Comments and Discussions

 
GeneralMy vote of 5 Pin
Aldus@Monitor6-Aug-10 2:22
memberAldus@Monitor6-Aug-10 2:22 
GeneralWindows 7 64-bit Pin
Benoit Chaperot15-Jul-10 0:24
memberBenoit Chaperot15-Jul-10 0:24 
GeneralBeen Looking For This For a Long Time !! Pin
Bill Gord16-Feb-10 5:39
memberBill Gord16-Feb-10 5:39 
GeneralAuthors tip: Version for Visual Studio 2010 available Pin
Jochen Baier7-Feb-10 8:44
memberJochen Baier7-Feb-10 8:44 
GeneralWorks in Visual Studio 2005, too Pin
scott sanders16-Dec-09 17:26
memberscott sanders16-Dec-09 17:26 
GeneralOk, this is a bit of a long shot... Pin
LongShot_0117-Jul-09 4:34
memberLongShot_0117-Jul-09 4:34 
GeneralRe: Ok, this is a bit of a long shot... Pin
Jochen Baier18-Jul-09 8:41
memberJochen Baier18-Jul-09 8:41 
GeneralAwesome Pin
dcrobbins12-Sep-08 3:34
memberdcrobbins12-Sep-08 3:34 
GeneralHelp Pin
vbMr'J23-Jul-08 8:55
membervbMr'J23-Jul-08 8:55 
GeneralRe: Help Pin
Member 434649423-Jul-08 10:40
memberMember 434649423-Jul-08 10:40 
GeneralVery nice Pin
Micah.code.project5-Jun-08 5:51
memberMicah.code.project5-Jun-08 5:51 

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