设置定时器的回调函数没有调用，如何解决？

[taixinltd]

// SampClient.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "winsock2.h"
#include "stdio.h"

char Message[1024] ; // 发送短信
VOID CALLBACK SendTimerProc( HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime );

WSADATA wsd;
WORD wVersion ;
SOCKET sClient;
struct sockaddr_in ServerAddr,ServerReplyAddr ;
int nRet,nAddrLen ;

int main(int argc, char* argv[])
{
wVersion = MAKEWORD(2,2);
nRet = WSAStartup(wVersion,&wsd);
if ( nRet != 0 )
{
printf("WSAStartup call error : code \n",WSAGetLastError());
return 1;
};
sClient = socket(AF_INET,SOCK_DGRAM,0);
if ( sClient == INVALID_SOCKET)
{
printf("socket() return invalid socket : error code \n",WSAGetLastError());
WSACleanup();
return 2 ;
};

ServerAddr.sin_family = AF_INET ;
ServerAddr.sin_port = htons(12345);
ServerAddr.sin_addr.S_un.S_addr = inet_addr("192.168.0.23") ;

UINT TimerID = SetTimer(NULL,1,1000,(TIMERPROC )SendTimerProc);
if ( TimerID == 0 )
printf("Create Timer Fail \n");
else
printf("create timer succeed : TimerId = %d !\n",TimerID);

while ( true )
{
char c ;
scanf("%c",&c);
};
if ( TimerID != 0 )
KillTimer(NULL,TimerID);
WSACleanup();
return 0;
}
VOID CALLBACK SendTimerProc( HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime )
{
printf("begin ...");
sprintf(Message,"wjd");
nAddrLen = sizeof(ServerAddr);
nRet = sendto(sClient,Message,1024,0,( struct sockaddr * ) & ServerAddr,nAddrLen);
if ( nRet == SOCKET_ERROR )
{
printf("call sendto error : code \n",WSAGetLastError());
return ;
}
else
printf("send %d byte message, all Message is %s \n",nRet,Message);



nRet = recvfrom(sClient,Message,1024,0,(struct sockaddr * ) & ServerReplyAddr,&nAddrLen);
if ( nRet == SOCKET_ERROR )
{
printf("recvfrom call error : code %d \n",WSAGetLastError());
return ;
}
else
printf("recvfrom message %s \n",Message);
}

程序运行后，并没有调用SendTimeProc,为什么呢?

[taixinltd]

原来还要加上消息队列处理：
while (GetMessage(&msg, // message structure
NULL, // handle to window to receive the message
NULL, // lowest message to examine
NULL) // highest message to examine
!= 0 && GetMessage(&msg, NULL, NULL, NULL) != -1)
{

// Post WM_TIMER messages to the hwndTimer procedure.

if (msg.message == WM_TIMER)
{
msg.hwnd = hwndTimer;
}

TranslateMessage(&msg); // translates virtual-key codes
DispatchMessage(&msg); // dispatches message to window
}

拷贝别人的，不好意思!

[happlyman]

哈哈，好了，自己解决了!