Removing windows.h from project

UINT SendString(string str)
{
   UINT count = 0;
   for (size_t i = 0; i < str.size();i++)
   {   
      INPUT input[2];
      ::ZeroMemory(input, sizeof(input)); 
      input[0].type = input[1].type = INPUT_KEYBOARD;
      input[0].ki.wVk  = input[1].ki.wVk = VkKeyScan(str[i]);
      input[1].ki.dwFlags = KEYEVENTF_KEYUP;
      count += SendInput(2, input, sizeof(INPUT));
   }
   return count;
}
void SendKey(char key){
	keybd_event(VkKeyScan(key),0,0,0);
	keybd_event(VkKeyScan(key),0,2,0);
}
void MouseMove(int x, int y )
{  
	double fScreenWidth    = ::GetSystemMetrics( SM_CXSCREEN )-1; 
	double fScreenHeight  = ::GetSystemMetrics( SM_CYSCREEN )-1; 
	double fx = x*(65535.0f/fScreenWidth);
	double fy = y*(65535.0f/fScreenHeight);
	INPUT  Input={0};
	Input.type      = INPUT_MOUSE;
	Input.mi.dwFlags  = MOUSEEVENTF_MOVE|MOUSEEVENTF_ABSOLUTE;
	Input.mi.dx = fx;
	Input.mi.dy = fy;
	::SendInput(1,&Input,sizeof(INPUT));
}
void MouseClick(string button, string mode){
	INPUT    Input={0};
	Input.type = INPUT_MOUSE;
	if(mode == "down"){
		if(button == "left"){Input.mi.dwFlags=MOUSEEVENTF_LEFTDOWN;}else if(button == "right"){Input.mi.dwFlags=MOUSEEVENTF_RIGHTDOWN;}
		::SendInput(1,&Input,sizeof(INPUT));
	}else if(mode == "up"){
		::ZeroMemory(&Input,sizeof(INPUT));
		if(button=="left"){Input.mi.dwFlags=MOUSEEVENTF_LEFTUP;}else if(button=="right"){Input.mi.dwFlags=MOUSEEVENTF_RIGHTUP;}
		::SendInput(1,&Input,sizeof(INPUT));
	}else if(mode == "both"){
		if(button == "left"){Input.mi.dwFlags=MOUSEEVENTF_LEFTDOWN;}else if(button == "right"){Input.mi.dwFlags=MOUSEEVENTF_RIGHTDOWN;}
		::SendInput(1,&Input,sizeof(INPUT));
		::ZeroMemory(&Input,sizeof(INPUT));
		if(button=="left"){Input.mi.dwFlags=MOUSEEVENTF_LEFTUP;}else if(button=="right"){Input.mi.dwFlags=MOUSEEVENTF_RIGHTUP;}
		::SendInput(1,&Input,sizeof(INPUT));
}
}

ShellExecute(NULL, L"open", L"http://google.com", NULL, NULL, SW_SHOWNORMAL);