分类: C/C++
2008-08-07 17:41:23
作为演示,下面的这段程序将更改TaskManager中第6个项目中第1列的内容。程序运行后的效果图:
二:具体实践
////////////////////////////////////////////////////////////////////////////////// /* * Send LVM_SETITEMTEXT * 版权所有 (C) 2005 天津 赵春生 * 2005.10.28 * * * 本程序适用于:Win2KP SP4[Windows TaskManager(5.0.2195.6620)] * WinXP SP1[Windows TaskManager] * 代码在Win2000P SP4 VC6 SP6测试通过 */ ////////////////////////////////////////////////////////////////////////////////// #include三、以上代码在Win2000P SP4 VC6 SP6测试通过。#include int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { HWND hwnd; int iItem=0; LVITEM lvitem, *plvitem; DWORD PID; HANDLE hProcess; char *p_MyItemText;//目标程序中用来存放TEXT的地址 //The pszText member is the pointer to a null-terminated // string containing the new text; it can also be NULL. //以上信息是从API手册中获得的,故在本例中字符串长度不能>=12, //以确保字符串后有NULL。 char str_MyItemText[12]={0}; strcpy(str_MyItemText,"天津 赵春生"); hwnd=FindWindow("#32770","Windows 任务管理器"); hwnd=FindWindowEx(hwnd,0,"#32770",0); hwnd=FindWindowEx(hwnd,0,"SysListView32",0); if (!hwnd) MessageBox(NULL,"[Windows 任务管理器] 尚未启动!","错误!",NULL); else { GetWindowThreadProcessId(hwnd, &PID); hProcess=OpenProcess(PROCESS_ALL_ACCESS,false,PID); if (!hProcess) MessageBox(NULL,"获取进程句柄操作失败!","错误!",NULL); else { plvitem=(LVITEM*)VirtualAllocEx(hProcess, NULL, sizeof(LVITEM), MEM_COMMIT, PAGE_READWRITE); p_MyItemText=(char*)VirtualAllocEx(hProcess, NULL, 12, MEM_COMMIT, PAGE_READWRITE); if ((!plvitem)||(!p_MyItemText)) MessageBox(NULL,"无法分配内存!","错误!",NULL); else { MessageBox(NULL,"本演示程序将更改TaskManager中第6个项目中第1列的内容。","提示",NULL); iItem=5;//5在这里是第六个(从零开始) lvitem.iSubItem=0;//同上 lvitem.pszText=p_MyItemText; WriteProcessMemory(hProcess, p_MyItemText, &str_MyItemText, 12, NULL); WriteProcessMemory(hProcess, plvitem, &lvitem, sizeof(LVITEM), NULL); //向目标程序发送LVM_SETITEMTEXT消息 SendMessage(hwnd, LVM_SETITEMTEXT, (WPARAM)iItem, (LPARAM)plvitem); } } } //释放内存 CloseHandle(hwnd); CloseHandle(hProcess); VirtualFreeEx(hProcess, plvitem, 0, MEM_RELEASE); VirtualFreeEx(hProcess, p_MyItemText, 0, MEM_RELEASE); return 0; }