CODEWITHSUNDEEP
c++xlib
TechEnthusiast
TechEnthusiast

Reputation: 283

how to free resources allocated by XopenDisplay

I have a following code 

bool isValidDisplay() {
   if (!XOpenDisplay(NULL)) {
      return false;
   }
   return true;    
 }

As I understand XOpenDisplay is allocating resources, what is correct way to free the resources in the above code .Does calling XCloseDisplay will solve the purpose.

Upvotes: 1

Views: 491

Answers (1)

Joshua
Joshua

Reputation: 43269

Yes, calling XCloseDisplay frees the result of a successful XOpenDisplay.

I'm guessing this is what you want, to free resources immediately.

bool isValidDisplay() {
   Display *d;
   if (!(d = XOpenDisplay(NULL))) {
      return false;
   }
   XCloseDisplay(d);
   return true;    
 }

Source:

$ man XOpenDisplay

Upvotes: 2

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