Thanks !

The following is a fragment of code：

sockaddr\_in		from,a;
WSADATA			wsdata;
BOOL			optval = TRUE;
u\_short			uPort  = m\_nPort;

if(WSAStartup(0x0202,&wsdata) != 0)
{
	CString strErr;
	strErr.Format(\_T("WSAStartup Init failed! Error code:%d"),WSAGetLastError());
	AddNote(strErr);
	\_endthreadex(0);
	return FALSE;
}

a.sin\_family		= AF\_INET;
a.sin\_addr.s\_addr	= 0;
a.sin\_port			= htons(uPort);

from.sin\_family			= AF\_INET;
from.sin\_addr.s\_addr	= INADDR\_BROADCAST;
from.sin\_port			= htons(uPort);

int fromlength=sizeof(SOCKADDR);
pThread->m\_socket = socket(AF\_INET,SOCK\_DGRAM,0);
setsockopt(pThread->m\_socket,SOL\_SOCKET,SO\_BROADCAST,(char FAR \*)&optval,sizeof(optval));
bind(pThread->m\_socket,(sockaddr \*)&a,sizeof(sockaddr\_in));

char		buf\[BUF\_MAX\_LEN\] = {0x00};
int			nLen = 0;
char		\*pszIPClient = NULL;
u\_short		uPortClient  = 0;
THREADBOARD	\*pThreadBoard = NULL;
CString		strInit = \_T("");

strInit.Format(\_T("Port: %d Now waiting for clients..."),uPort);
AddNote(strInit);

while(true)
{
	nLen = recvfrom(pThread->m\_socket,buf,BUF\_MAX\_LEN,0,(struct sockaddr FAR \*)&from,(int FAR \*)&fromlength);
	if(nLen > 0)
	{
		// How to distinguish is send broadcast , or normal send ?
	}
}

Thanks for your reply !

shot.h

/*
Class Name:

  CTGALoader.

  This class loads a tga texture into this object.
  
shot.h

*/

#ifndef CTGALOADER_H
#define CTGALOADER_H

// Remember to place all your GL/system header files that you will need to run class function

class CTGALoader
{
public:
CTGALoader(); // Constructor.
~CTGALoader(); // Destructor.

  bool LoadTGAFile(char \*filename);   // Load a .tga image file.
  void SaveTGAScreenShot(char \*filename,
                         int width,
                         int height); // Save a .tga screen shot.
  void FreeImage();                   // Delete a image.

  unsigned int ID;                    // ID used for generating the textures in OpenGl.
  int imageWidth;                     // Width of a texture.
  int imageHeight;                    // Height of a texture.

protected:
void GenerateTexture(); // Generate a texture in OpenGL.
bool LoadTGA(char *filename); // Load a tga image.
bool WriteTGA(char *file, short int width,
short int height,
unsigned char *image); // Write a tga file.

  unsigned char \*image;               // Texture image.
  bool textureExist;                  // This will be used if the image was loaded.
  int type;                           // Image format.

};

#endif

shot.cpp

/*
Class Name:

  CTGALoader.

shot.h

*/

#include"shot.h"

#include
#include <./gl/GL.H>
#include <./gl/GLU.H>
#include

#pragma comment(lib,"OPENGL32.LIB")
#pragma comment(lib,"Glu32.lib")

CTGALoader::CTGALoader()
{
// Give everything default values.
image = 0;
textureExist = false;
type = 0;
}

CTGALoader::~CTGALoader()
{
FreeImage(); // Delete all images and dynamic memory.
}

bool CTGALoader::LoadTGAFile(char *file)
{
if(textureExist)
FreeImage();

if(!LoadTGA(file))
return false;

// Make sure the image loaded.
if(image == 0)
{
return false;
}

GenerateTexture();

textureExist = true;

return true;
}

void CTGALoader::GenerateTexture()
{
// Generate the texture and text the id to the images id.
glGenTextures(1, &ID);

// Here we bind the texture and set up the filtering.
glBindTexture(GL_TEXTURE_2D, ID);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

the vector and map like same as. what's the mean ?

The chatroom server app is used TCP WSAasyncSelect mode . I want ban some ip in the chatroom,let him doesn't connect the server. Now I use a vector list to save the ip, when someone connect ,it will traversal search . if in the black list, then call closesocket. But this is the low efficiency. Is there any other way? Thanks for you replay !

I use GDI or DirectX way to capture the screen shot. In windows xp or 2003, the picture is normal, but in some win7 (32 or 64) system: It is the desktop's image or whole black , when running a full screen game. what's wrong ? and how to fix it ? :)

try to use CStdioFile::ReadString to read one line once. :)

How to defense attack of the WSAAsyncSelect TCP Server ?[^] The server program is attacked buy many connection, like WEB DDOS. Please Help !

thanks ! :)

First , thanks for your reply ! but how can I get it offline real-time ? I set a timer to call CheckIsOnline() to find the client struct's m_nLastActive; the client call SendHeartPacket() every 30 second, and the server recv it then set the m_nLastActive. when (GetTickCount() - m_nLastActive) >= (1000 * 10),I will remove from the list. but when I run some days in wlan server, it be crashed,I cound't found what's wrong with it. :( This is my biggest headache !

when I unplug the Ethernet cable,the client doesn't send the FD_CLOSE event to the server so the server's online list isn't fresh new. How about this ?

may be is right , but is there any way to fix it ?

Hello ! I use WSAAsyncSelect to do a small ChatSystem in the WLAN Server. (the max client may be has 100-200 online,and the ordinary time is 30-50 online at the same time.) like this:

SOCKET sock = (SOCKET) wParam;
if(WSAGETSELECTERROR(lParam)){
DeleteClient(sock);
return;
}

switch(WSAGETSELECTEVENT(lParam)){
case FD_ACCEPT:
sClient = accept(wParam, (struct sockaddr *)&client, &iAddrSize);
// Add to the CPtrList
// ......
WSAAsyncSelect(sClient, hwnd, WM_SOCKET, FD_READ | FD_CLOSE);
break;

case FD_READ:
ReadData(sock); // Paser the data.
break;

case FD_CLOSE:
DeleteClient(sock); //Del from the CPtrList.
break;

default:
break;
}

at last ,when add/del client, it will refresh onlines info to the Server's list control. May be it doesn't receive the FD_CLOSE message. but usually ,it has some few days ago results. I run in the Lan and use other Lan computer to test it, but can't found this problem. How about this ? Thanks for you reply !

I use WinInet + MFC to post some form to the web server. I add the log module, at last found this: 1. call CInternetSession::GetHttpConnection 2. call CInternetSession::OpenURL 3. call CHttpFile::SendRequest 4. call CHttpFile::QueryInfoStatusCode (block) at the step 4, some computer is ok, but some computer is block here. when is block , the last error code:12002 ,it means time out. I search in this web and google, but usually saied that's the WinInet's bug. What should I do? ////////////////////////////////////////////// Thanks for your reply ! :)

I use the WSAAsyncSelect now, and then the server use the vector to save the client. the server has a ListCtrl to show the online's client,and then FD_ACCEPT it will push_back into the vector. and then FD_CLOSE it will earse from the vector. but it often not receive FD_CLOSE when the client's power failure. I found the setsockopt from google, but don't quite understand the Windows Socket TCP Keepalive. how to use it ? Thanks for your reply !

Thanks ! :)

The program running in xp is no problem ,bu in Win7 ,it doesn't use the CreateRemoteThread to inject a dll to other process. if I use the administrator to run,is also failed ! It's there any where to do this in Win7/Vista ? ;P I found this note: http://www.codeproject.com/Messages/3625827/It-dont-work-on-64bit-win7-system.aspx[^] but I can't open the url, because the country's gateway shield it. Thanks for your reply ! Best Regards !

:-D

Hello everybody ! this is a SDI Project,in the toolbar,there are two button,it used to show different dialog.

class CTestView;

void CTestView::OnShowDlgA()
{
// TODO: Add your command handler code here
CPropertySheet sheet(_T("TestDlgA"));
CTestDlgA dlg;

sheet.AddPage(&dlg);
if(IDOK == sheet.DoModal())
{
	// do something.
}

}

void CTestView::OnShowDlgB()
{
// TODO: Add your command handler code here
CPropertySheet sheet(_T("TestDlgB"));
CTestDlgB dlg;

sheet.AddPage(&dlg);
if(IDOK == sheet.DoModal())
{
	// do something.
}

}

class CTestDlgA : public CPropertyPage
{
// ...
}

// add the virtual function
void CTestDlgA ::OnOK()
{
// when is false,it will return ,and then end the dialog.
// I don't want it closed.
if( !SaveParams() )
return;

EndDialog(IDOK);
//CPropertyPage::OnOK();

}

class CTestDlgB : public CPropertyPage
{
// ...
}

// add the virtual function
void CTestDlgB ::OnOK()
{
// usually, this dialogB doesn't closed when is false.
// but the dialogA is closed at this.
if( !SaveParams() )
return;

EndDialog(IDOK);
//CPropertyPage::OnOK();

}

Why will appear this kind of circumstance? Thanks for your reply ! Best Regards !

modified on Wednesday, May 11, 2011 3:34 AM

I setup the mysql5.0 and sdk. now I create a mfc dialog project, and use it in the Main Thread ,it's no problem. but I create another thread, in the thread function I define a variables like this: DWORD CTestDlg::ThreadFun(LPVOID lParam) { CTestDlg *pDlg = (CTestDlg *)lParam; MYSQL mysql; mysql_init(&mysql); // here is access violation. Unhandled exception in Test.exe(MYSQLD.exe): 0xc0000005: Access Violation. // if I use it in the main thread,is ok. } so how to use the mysql in the child thread ?