c++ - How to use GetAsyncKeyState without calling it multiple times? -

this how code looks like:

    if (getasynckeystate(vk_control) && getasynckeystate(0x31)) {         //...     }      if (getasynckeystate(vk_control) && getasynckeystate(0x32)) {         //...     }      if (getasynckeystate(vk_control) && getasynckeystate(0x33)) {         //...     }      if (getasynckeystate(vk_control) && getasynckeystate(0x34)) {         //...     }      if (getasynckeystate(vk_control) && getasynckeystate(0x35)) {         //...     } 

is there more efficient way of doing without calling getasynckeystate multiple times per loop? maybe store function value integer , use switch statement?

also, not want use registerhotkey.

here tips. 0. calling func slower using value directly. 1. if-else statement can build tree.the tree should optimized path compression. can promote code this.

static bool keys[256]; int getkey(){          //don't forget call  before querying "keys" array.     for(int i=0;i<256;i++)           getasynckeystate(i);     return 0; } if(keys[vk_control]) {     if (keys[0x31]) {         //...     }      if (keys[0x32]) {        //...     }      if (keys[0x33]) {         //...     }      if (keys[0x34]) {         //...     }      if (keys[0x35]) {         //...     } }