Giuseppe "Cowo" Corbelli ...

Disclaimer: I'm not a visual basic programmer. In fact I don't know visual basic at all; this was my first experiment in vb.

Over the years I've been fighting with Microsoft Visual Studio 6 editor, and missing many of Scintilla's features; one of the most useful is the capability to comment/uncomment a line of code. So I wrote this little macro, and usually bind it to a Ctrl+Q; hope someone will find it useful!

Tipographic note: to constrain this code in blog's page width, I've had to break long lines with '\'. I don't know if this line-break is acceptable to vb, so don't copy&paste blindly.

Sub CommentUncomment()
'DESCRIPTION: Comment/Uncomment a line of C++ code.

'Begin Recording
  StartLine = ActiveDocument.Selection.TopLine
  EndLine = ActiveDocument.Selection.BottomLine
  If EndLine < StartLine Then
    Temp = StartLine
    StartLine = EndLine
    EndLine = Temp
  End If
  For i = StartLine To EndLine
    ActiveDocument.Selection.GoToLine i
    ActiveDocument.Selection.StartOfLine \
      dsFirstText, dsMove
    ActiveDocument.Selection.CharRight dsExtend, 3
    if ActiveDocument.Selection.Text = "//~" Then
      ActiveDocument.Selection.Delete
    Else
      ActiveDocument.Selection = "//~" + \
        ActiveDocument.Selection
    End If
  Next

'End Recording
End Sub

While developing an application with Microsoft Embedded Visual C++ 4 on Windows CE 4.2 I stumbled upon the infamous XLock bug.
This bug creeps up in Release builds when you try to use standard STL containers such as std::map in a MFC project. I did not investigate, but apparently something prevents the inclusion of empty XLock implementation in Single-Threaded builds.
I did not test Multi-Threaded builds.
There are some other references to this issue in various newsgroups, but I did't find a ready-made solution, so I posted this, to serve as an archive.
Symptom:

error LNK2001: unresolved external symbol "public: __cdecl std::_Lockit::_Lockit(void)" (??0_Lockit@std@@QAA@XZ)

Solution:
Create a XLock.cpp file and add it to your application. Copy & paste from here:
>>>> xlock.cpp

#ifndef  _MT

#include <afxwin.h>
#include <yvals.h>

namespace std {

_Lockit::_Lockit() {}
inline _Lockit::~_Lockit() {}

}
#endif //_MT

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