Inserting a tool bar button to the Windows explorer from shellextension.

[Shafiq]

Hi,

I am trying to insert a new toolbar button to the windows explorer
menu. I an able to locate the correct ToolbarWindow32 , and inserted a
button using the code snippet shown below. However the toolbar button
text is coming in jung characters. Any help will be greatly
appreciated.
Int32 iBitmap = 0;
TBBUTTON Button = new TBBUTTON();
Button.idComman d = 1000;
Button.fsState = (byte)TBSTATE.T BSTATE_ENABLED;
Button.fsStyle = (byte)(BTNS.BTN S_BUTTON | BTNS.BTNS_AUTOS IZE |
BTNS.BTNS_SHOWT EXT);
Button.dwData = 0;
Button.iString = Marshal.StringT oHGlobalUni("te st Menu\0");
Button.iBitmap = iBitmap;
Result = SetToolBarButto n(toolbarhwnd, buttoncount, ref Button);

private unsafe bool SetToolBarButto n(IntPtr hToolbar, int index, ref
TBBUTTON tbButton)
{
// One page
const int BUFFER_SIZE = 0x1000;
byte[] localBuffer = new byte[BUFFER_SIZE];
UInt32 processId = 0;
UInt32 threadId = Win32.GetWindow ThreadProcessId (hToolbar, out
processId);
IntPtr hProcess = Win32.OpenProce ss(ProcessRight s.PROCESS_ALL_A CCESS,
false, processId);
if (hProcess == IntPtr.Zero)
{
Debug.Assert(fa lse);
return false;
}

IntPtr ipRemoteBuffer = Win32.VirtualAl locEx(hProcess, IntPtr.Zero,
new UIntPtr(BUFFER_ SIZE), MemAllocationTy pe.COMMIT,
MemoryProtectio n.PAGE_READWRIT E);
if (ipRemoteBuffer == IntPtr.Zero)
{
Debug.Assert(fa lse);
return false;
}

fixed (TBBUTTON* pTBButton = &tbButton)
{
IntPtr ipTBButton = new IntPtr(pTBButto n);

// this is fixed
Int32 dwBytesWritten = 0;
IntPtr ipBytesWritten = new IntPtr(&dwBytes Written);

bool b4 = Win32.WriteProc essMemory(hProc ess,
ipRemoteBuffer,
ipTBButton,
new UIntPtr((uint)s izeof(TBBUTTON) ),
out ipBytesWritten) ;

if (!b4)
{
Debug.Assert(fa lse);
return false;
}
int chars = (int)Win32.Send Message(hToolba r, (uint)TB.TB_INS ERTBUTTON,
(IntPtr)index, ipRemoteBuffer) ;
if (chars == -1)
{
Debug.Assert(fa lse);
return false;
}
}

Win32.VirtualFr eeEx(hProcess, ipRemoteBuffer, UIntPtr.Zero,
MemAllocationTy pe.RELEASE);
Win32.CloseHand le(hProcess);

return true;
}

[Ben Voigt [C++ MVP]]

"Shafiq" <sh********@gma il.comwrote in message
news:c5******** *************** ***********@e25 g2000prg.google groups.com...

Hi,

I am trying to insert a new toolbar button to the windows explorer
menu. I an able to locate the correct ToolbarWindow32 , and inserted a
button using the code snippet shown below. However the toolbar button
text is coming in jung characters. Any help will be greatly
appreciated.

Pretty sure writing shell extensions in .NET is a no-no. (Mainly because
each process can have only one CLR version loaded)

[Chris Mullins [MVP - C#]]

"Shafiq" <sh********@gma il.comwrote

[Shell Extension]

Not that this answers your question, but there's a big problem writing shell
extensions in .Net. The shell is a single process, and any process can only
have a single version of .Net running.

This means the shell may already be hosting a .Net 1.1. app, and your .Net
2.0 app therefore can't load. This will be very frustrating for both you and
your users.

Now with that said, what you're look for are called Band Objects, and there
are a number of toolkits out there for this. A good place to start would be:
http://www.codeproject.com/KB/cs/Ban...spx?print=true

--
Chris Mullins

[Ben Voigt [C++ MVP]]

"Chris Mullins [MVP - C#]" <cm******@yahoo .comwrote in message
news:Ow******** ******@TK2MSFTN GP02.phx.gbl...

"Shafiq" <sh********@gma il.comwrote

[Shell Extension]

Not that this answers your question, but there's a big problem writing
shell extensions in .Net. The shell is a single process, and any process
can only have a single version of .Net running.

This means the shell may already be hosting a .Net 1.1. app, and your .Net
2.0 app therefore can't load. This will be very frustrating for both you
and your users.

Bigger problem -- shell extensions are loaded into any program using the
common dialog boxes (at least File Open and File Save), so you have to worry
about CLR conflicts not just in the shell but with practically every single
other program on the computer.

>
Now with that said, what you're look for are called Band Objects, and
there are a number of toolkits out there for this. A good place to start
would be:
http://www.codeproject.com/KB/cs/Ban...spx?print=true

--
Chris Mullins