那么这后面的两个 0 是什么意思呢？

Question

private readonly int MOUSEEVENTF_LEFTDOWN = 0x2;
private readonly int MOUSEEVENTF_LEFTUP = 0x4;
private readonly int MOUSEEVENTF_RIGHTDOWN = 0x008;
private readonly int MOUSEEVENTF_RIGHTUP = 0x0010;

mouse_event(MOUSEEVENTF_LEFTDOWN| MOUSEEVENTF_LEFTUP, X * 65536 / 1024, Y * 65536 / 768, 0, 0);
mouse_event(MOUSEEVENTF_LEFTDOWN| MOUSEEVENTF_LEFTUP, X * 65536 / 1024, Y * 65536 / 768, 0, 0);

Answer 1

这是用AVR的SPI接口进行发送和接收的函数unsigned char mmcSendByte(unsigned char data){unsigned char tmp;SPDR = data;//把发送的数据放入SPI发送缓冲寄存器中while( !(SPSR & (1 << SPIF)) ); //等待发送完成标志SPIF置1，置1表示发送完成tmp = SPDR;//SPI是双向通讯，发送完成后，从机要发送的数据会存入SPDR中return tmp;//返回值是接收到的从机发送的数据}while( !(SPSR & (1 << SPIF)) ); 这条语句不好理解，在AVR的H文件中有定义，SPIF就是0-7数字中的一个，SPIF是SPSR寄存器中的一位，假设SPIF为2，那么上述语句就while(!(SPSR&0X02))

Answer 2

private readonly int MOUSEEVENTF_LEFTDOWN = 0x2;//定义鼠标左键按下消息private readonly int MOUSEEVENTF_LEFTUP = 0x4;//定义鼠标左键弹起消息private readonly int MOUSEEVENTF_RIGHTDOWN = 0x008;//定义鼠标右键按下消息private readonly int MOUSEEVENTF_RIGHTUP = 0x0010; //定义鼠标右键弹起消息mouse_event(MOUSEEVENTF_LEFTDOWN| MOUSEEVENTF_LEFTUP, X * 65536 / 1024, Y * 65536 / 768, 0, 0);//这个应该是处理鼠标左键点击的事件