鼠标乱飞和错误图标结合

一般那些病毒不只是错误图标，是鼠标乱飞和错误图标结合。

#include<iostream>
#include<windows.h>
using namespace std;
int main(){
    int iDesktopWidth = GetSystemMetrics(SM_CXSCREEN);
    int iDesktopHeight = GetSystemMetrics(SM_CYSCREEN);
    HWND hDesktop = GetDesktopWindow();
    HDC hdc = GetWindowDC(hDesktop);
    while(true){

    int x=GetSystemMetrics(SM_CXSCREEN);
    int y=GetSystemMetrics(SM_CYSCREEN);
    SetCursorPos(rand()%x,rand()%y);
    POINT cursor;
    GetCursorPos(&cursor);
    DrawIcon(hdc, cursor.x - 10, cursor.y - 10, LoadIcon(NULL, IDI_ERROR));
    }
}