#include <windows.h>
#include <iostream>
int main() {
HWND hWnd = FindWindow(NULL, L"Window Title");
if (!hWnd) return -1;
int x = 50, y = 50;
LPARAM lParam = MAKELPARAM(x, y);
PostMessage(hWnd, WM_LBUTTONDOWN, MK_LBUTTON, lParam);
PostMessage(hWnd, WM_LBUTTONUP, 0, lParam);
return 0;
}