SendMessage字符串

[gmyhbio]

先向目标程序A.EXE注入DLL，DLL::SetWindowsHookExA(WH_CALLWNDPROC,&GameMessage,FSKH,tID);

LRESULT CALLBACK GameMessage(int nCode, WPARAM wParam, LPARAM lParam)
{
if (nCode == HC_ACTION)
{
switch(((PCWPSTRUCT)lParam)->message)
{
case WM_CONN:
char Buf[MAX_PATH]={0};
sprintf(Buf,"aaaaaa [SendMessage]wParam=%X lParam=%X dd=%s",wParam,lParam,(char*)lParam);
OutputDebugString(Buf);
break;
}

}
return CallNextHookEx(0,nCode,wParam,lParam);
}



我想实现从一个VB程序SENDMESSAGE字符串到目标程序A，然后DLL会拦截SENDMESSAGE消息。
我要如何才能获得这个字符串？

[gmyhbio]

LRESULT CALLBACK GameMessage(int nCode, WPARAM wParam, LPARAM lParam)
{
if (((PCWPSTRUCT)lParam)->message == WM_COPYDATA)
{
CString CmdLine=(LPSTR)((PCOPYDATASTRUCT)lParam)->lpData;
//PCOPYDATASTRUCT lpcds = (PCOPYDATASTRUCT)lParam;
CmdCall(CmdLine);
}
return CallNextHookEx(0,nCode,wParam,lParam);
}

接收不到消息- -

[还在查]

2个进程间的通信你用WM_COPYDATA消息试试看

[chzhn]

将字符串保存一个特定的内存地址，用SendMessage的时候将内存地址传送过去，接收端得到地址后用ReadProcessMemory读取这个进程的内存。

[renxu350]

微软会好人做到底，帮你把字符串COPY到目标进程

[Simao]

字符的话，要保证静态全局变量啊
case WM_CONN:
static char Buf[MAX_PATH]={0};
sprintf(Buf,"aaaaaa [SendMessage]wParam=%X lParam=%X dd=%s",wParam,lParam,(char*)lParam);
OutputDebugString(Buf);