避免switch嵌套的一种方法

DWORD nFlags = 0;switch (mouse.nButton){case 0: //左键nFlags = 1;case 1: //右键nFlags = 2;break;case 2: //中间nFlags = 4;break;case 4:nFlags = 8;break;}if (nFlags != 8)SetCursorPos(mouse.ptXY.x, mouse.ptXY.y);switch (mouse.nAction){case 0: //单击nFlags |= 0x10;break;case 1: //双击nFlags |= 0x20;break;case 2: //按下nFlags |= 0x40;break;case 3: //放开nFlags |= 0x80;break;default:break;}switch (nFlags){case 0x21: //左键双击case 0x11: //左键单击break;case 0x41: //左键按下break;case 0x81: //左键放开break;case 0x22:case 0x12:break;case 0x42:break;case 0x82:break;case 0x24:case 0x14:break;case 0x44:break;case 0x84:break;case 0x08:break;}

在第一个switch中设置低位然后再下一个switch设置高位,最后根据不同情况进行选择