C# Discussion Boards - CodeProject

#realJSOP12-Aug-08 23:49

12-Aug-08 23:49

Using VS2005...

I've got an app that's uses up a HttpListener object. When a request is detected, a file is streamed to the requesting application. When the streaming starts, a tmp file is being created (not by my code), in the Windows\Temp folder. Is it possible to prevent this tmp file from being created?

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
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Re: Prevent Temp File Creation

Mark Salsbery13-Aug-08 6:57

Mark Salsbery

13-Aug-08 6:57

John Simmons / outlaw programmer wrote:
When the streaming starts, a tmp file is being created

On which end - client or server?

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Prevent Temp File Creation

#realJSOP15-Aug-08 2:31

#realJSOP

15-Aug-08 2:31

The (desktop) app is streaming the file to itself (actuallyn to a SWF resource in the app) via an HttpListener, so it's all on the client side. I personally think it's an automatic Windows thing that happens whenever a file is sent via HTTP.

Re: Prevent Temp File Creation

Mark Salsbery15-Aug-08 5:35

Mark Salsbery

15-Aug-08 5:35

John Simmons / outlaw programmer wrote:
so it's all on the client side.

I meant the client or server side of the HTTP connection...
doesn't matter if it's in the same app or not. The listener
end being the server and the requesting end being the client.

Is it a cache file? Is it a copy of the file being sent?

Does using the cache control headers have any effect?

// client (requesting) end
WebHeaderCollection ^headers = request->Headers;
headers->Set(HttpRequestHeader::CacheControl, "no-cache, no-store, no-transform");
headers->Set(HttpRequestHeader::Pragma, "no-cache");
...send request...

// server (listener) end
WebHeaderCollection ^headers = response->Headers;
headers->Set(HttpResponseHeader::CacheControl, "private, no-cache, no-store, no-transform");
headers->Set(HttpResponseHeader::Pragma, "no-cache");
...send response...

You're using HttpListener on the server end....what are you using
on the client end?

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

How can I emulate double click event to the system tray button

Highwinyungoy12-Aug-08 22:50

Highwinyungoy

12-Aug-08 22:50

hi,everyone~

I have searched the answer from internet for long time but can't find similar situation.

I want to call a system tray process from my winform and double click it.

Now I have got the system tray tool bar handle and every tool bar button handle.

Then when I try using "IntPtr rr = SendMessage(_ToolbarWindowHandle, WM_LBUTTONDBLCLK, new IntPtr(tbButton.idCommand), new IntPtr(0))" to send db-click message to one of the tbbutton, it always point to the first button event. I think the reason of the problem should be the lastest parameter(lparam), but I don't know how to set the param.

Or any way else to solve it?
Hope anwser, thanks.

Re: How can I emulate double click event to the system tray button

Giorgi Dalakishvili12-Aug-08 22:58

Giorgi Dalakishvili

12-Aug-08 22:58

Highwinyungoy wrote:
I have searched the answer from internet for long time but can't find similar situation.

You have not searched well. Shell Tray Info - Arrange your system tray icons[^]

Giorgi Dalakishvili

#region signature
my articles
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Re: How can I emulate double click event to the system tray button

Highwinyungoy13-Aug-08 0:29

Highwinyungoy

13-Aug-08 0:29

Hi,Giorgi Dalakishvili

Thank you for your reply.

I have downloaded your source code, and it must be useful to me, but I am not good at C++,

I appreciate very much if you can help me refer to C# solution

Here is my source code:

IntPtr hTray = FindWindowEx( hDesktop, IntPtr.Zero, "Shell_TrayWnd", null );

IntPtr hReBar = FindWindowEx(hTray, IntPtr.Zero, "traynotifywnd", null);

IntPtr hTask = FindWindowEx(hReBar, IntPtr.Zero, "syspager", null);

IntPtr hToolbar = FindWindowEx( hTask, IntPtr.Zero, "ToolbarWindow32", null );

UInt32 count = SendMessage( hToolbar , TB.BUTTONCOUNT, 0, 0 );

for ( int i = 0 ; i < count ; i++ )
{
TBBUTTON tbButton = new TBBUTTON();
string text = String.Empty;
IntPtr ipWindowHandle = IntPtr.Zero;

bool b = GetTBButton( hToolbar , i, ref tbButton, ref text, ref ipWindowHandle );

if ( b )
if (text.IndexOf("Windows Live") != -1)
{
IntPtr rr = SendMessage(hToolbar , WM_LBUTTONDBLCLK, new IntPtr(tbButton.idCommand), new IntPtr(0));
}
}

Re: How can I emulate double click event to the system tray button

Highwinyungoy13-Aug-08 0:34

Highwinyungoy

13-Aug-08 0:34

private unsafe bool GetTBButton( IntPtr hToolbar, int i, ref TBBUTTON tbButton, ref string text, ref IntPtr ipWindowHandle )
{
// One page
const int BUFFER_SIZE = 0x1000;

byte[] localBuffer = new byte[ BUFFER_SIZE ];

UInt32 processId = 0;
UInt32 threadId = User32.GetWindowThreadProcessId( hToolbar, out processId );

IntPtr hProcess = Kernel32.OpenProcess( ProcessRights.ALL_ACCESS, false, processId );
if ( hProcess == IntPtr.Zero ) { Debug.Assert( false ); return false; }

IntPtr ipRemoteBuffer = Kernel32.VirtualAllocEx(
hProcess,
IntPtr.Zero,
new UIntPtr( BUFFER_SIZE ),
MemAllocationType.COMMIT,
MemoryProtection.PAGE_READWRITE );

if ( ipRemoteBuffer == IntPtr.Zero ) { Debug.Assert( false ); return false; }

// TBButton
fixed ( TBBUTTON* pTBButton = & tbButton )
{
IntPtr ipTBButton = new IntPtr( pTBButton );

int b = ( int ) User32.SendMessage( hToolbar, TB.GETBUTTON, ( IntPtr ) i, ipRemoteBuffer );
if ( b == 0 ) { Debug.Assert( false ); return false; }

// this is fixed
Int32 dwBytesRead = 0;
IntPtr ipBytesRead = new IntPtr( & dwBytesRead );

bool b2 = Kernel32.ReadProcessMemory(
hProcess,
ipRemoteBuffer,
ipTBButton,
new UIntPtr( ( uint ) sizeof( TBBUTTON ) ),
ipBytesRead );

if ( ! b2 ) { Debug.Assert( false ); return false; }
}

// button text
fixed ( byte* pLocalBuffer = localBuffer )
{
IntPtr ipLocalBuffer = new IntPtr( pLocalBuffer );

int chars = ( int ) User32.SendMessage( hToolbar, TB.GETBUTTONTEXTW, ( IntPtr ) tbButton.idCommand, ipRemoteBuffer );
if ( chars == -1 ) { Debug.Assert( false ); return false; }

// this is fixed
Int32 dwBytesRead = 0;
IntPtr ipBytesRead = new IntPtr( & dwBytesRead );

bool b4 = Kernel32.ReadProcessMemory(
hProcess,
ipRemoteBuffer,
ipLocalBuffer,
new UIntPtr( BUFFER_SIZE ),
ipBytesRead );

if ( ! b4 ) { Debug.Assert( false ); return false; }

text = Marshal.PtrToStringUni( ipLocalBuffer, chars );

if ( text == " " ) text = String.Empty;
}

// window handle
fixed ( byte* pLocalBuffer = localBuffer )
{
IntPtr ipLocalBuffer = new IntPtr( pLocalBuffer );

// this is in the remote virtual memory space
IntPtr ipRemoteData = new IntPtr( tbButton.dwData );

// this is fixed
Int32 dwBytesRead = 0;
IntPtr ipBytesRead = new IntPtr( & dwBytesRead );

bool b4 = Kernel32.ReadProcessMemory(
hProcess,
ipRemoteData,
ipLocalBuffer,
new UIntPtr( 4 ),
ipBytesRead );

if ( ! b4 ) { Debug.Assert( false ); return false; }

if ( dwBytesRead != 4 ) { Debug.Assert( false ); return false; }

Int32 iWindowHandle = BitConverter.ToInt32( localBuffer, 0 );
if ( iWindowHandle == -1 ) { Debug.Assert( false ); }//return false; }

ipWindowHandle = new IntPtr( iWindowHandle );
}

Kernel32.VirtualFreeEx(
hProcess,
ipRemoteBuffer,
UIntPtr.Zero,
MemAllocationType.RELEASE );

Kernel32.CloseHandle( hProcess );

return true;
}

Here is the function used above, I got it from another article, waiting for help, thank you

Re: How can I emulate double click event to the system tray button

Giorgi Dalakishvili13-Aug-08 0:34

Giorgi Dalakishvili

13-Aug-08 0:34

Highwinyungoy wrote:
I have downloaded your source code, and it must be useful to me, but I am not good at C++,

It's not my source code Smile | :)

You can call c++ code from your application using P/Invoke.

Giorgi Dalakishvili

#region signature
my articles
#endregion

e-book pdf

Rzasgal12-Aug-08 21:43

Rzasgal

12-Aug-08 21:43

can you give an advice e-book and ı am searching free (wrox professional c# 3.5 e-book) link