Windows开发：鼠标操作

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一般情况下，Windows平台下可以使用mouse_event函数实现鼠标操作
我们这里使用更新后的SendInput函数

bool MouseEventpos(InputData data)
{
	INPUT MouseData = { 0 };
	MouseData.type = INPUT_MOUSE;
	MOUSEINPUT &MouseInput = MouseData.mi;
	MouseInput.time = NULL;
	MouseInput.dwExtraInfo = NULL;
	if (true)//绝对值或相对值
	{
		MouseInput.dwFlags |= MOUSEEVENTF_ABSOLUTE;
		MouseInput.dx = ((x * 1.0f) / (m_width * 1.0f)) * 65535;
		MouseInput.dy = ((y * 1.0f) / (m_height * 1.0f)) * 65535;
	}
	else
	{
			//TODO:相对值
	}
	//下面是根据函数传入参数进行判断
	if (data.input_data() == MOUSE_WHEEL)
	{
		MouseInput.dwFlags |= MOUSEEVENTF_WHEEL;
		MouseInput.mouseData = data.value();
	}
	else
	{
		switch (data.inputstate())
		{
		case DEFAULT:
		{
			MouseInput.dwFlags |= MOUSEEVENTF_MOVE;
			break;
		}
		case STATE_DOWN:
		{
			if ((int)BUTTON_LEFT == data.input_data())
			{
				MouseInput.dwFlags |= MOUSEEVENTF_LEFTDOWN;
			}
			else if ((int)BUTTON_MIDDLE == data.input_data())
			{
				MouseInput.dwFlags |= MOUSEEVENTF_MIDDLEDOWN;
			}
			else if ((int)BUTTON_RIGHT == data.input_data())
			{
				MouseInput.dwFlags |= MOUSEEVENTF_RIGHTDOWN;
			}
			break;
		}
		case STATE_UP:
		{
			if ((int)BUTTON_LEFT == data.input_data())
			{
				MouseInput.dwFlags |= MOUSEEVENTF_LEFTUP;
			}
			else if ((int)BUTTON_MIDDLE == data.input_data())
			{
				MouseInput.dwFlags |= MOUSEEVENTF_MIDDLEUP;
			}
			else if ((int)BUTTON_RIGHT == data.input_data())
			{
				MouseInput.dwFlags |= MOUSEEVENTF_RIGHTUP;
			}
			break;
		}
		default:
			break;
		}
	}
	//可以一次性发多个，SendInput第一个参数是发送的结构体个数，第二个是数组指针，详见MSDN
	SendInput(1, &MouseData, sizeof(MouseData));
	return true;
}