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- Fixed BadWindow errors caused by Destroy and UnmapNotify in Xlib

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This commit is contained in:
Ben Reaves
2020-03-30 16:10:00 -05:00
parent 548e248515
commit 40c8d20513
2 changed files with 38 additions and 6 deletions
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kintox11/src/kintox11.c
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@@ -194,7 +194,7 @@ Window get_focus_window(Display* d){
// a top window have the following specifications.
// * the start window is contained the descendent windows.
// * the parent window is the root window.
Window get_top_window(Display* d, Window start){
Window get_top_window(Display* d, Window start, int etype, int last_event, char const *current_app){
Window w = start;
Window parent = start;
Window root = None;
@@ -202,22 +202,27 @@ Window get_top_window(Display* d, Window start){
unsigned int nchildren;
Status s;
while (parent != root && parent != 0) {
// Checking for Destroy and Unmap Notify events here too
// Sometimes they still get passed through and if so need
// to be ignored or XQueryTree will cause a segmentation fault
while (parent != root && parent != 0 && !(etype == 17 || etype == 18)) {
w = parent;
s = XQueryTree(d, w, &root, &parent, &children, &nchildren); // see man
if (s)
XFree(children);
if(xerror){
printf("fail to get top window: %ld\n",w);
exit(1);
printf("fail to get top window: %ld, e.type: %d, last_event: %d, current_app: %s\n",w,etype,last_event, current_app);
break;
}
// printf(" get parent (window: %d)\n", (int)w);
}
// printf("success (window: %d)\n", (int)w);
// printf("hello\n");
return w;
}
@@ -431,7 +436,7 @@ int main(void){
// get active window
w = get_focus_window(d);
w = get_top_window(d, w);
w = get_top_window(d, w, 0, 0, current_app);
w = get_named_window(d, w);
// XFetchName(d, w, &name);
@@ -546,8 +551,35 @@ int main(void){
}
}
// if(strcicmp(current_app, "plasmashell") == 0){
// XNextEvent(d, &e);
// }
// if(strcicmp(current_app, "plasmashell") == 0 && e.type == 18 && last_event == 22){
// XNextEvent(d, &e);
// }
// if(strcicmp(prior_app, "plasmashell") == 0){
// XNextEvent(d, &e);
// }
// if(strcicmp(current_app, "dolphin") == 0){
// XNextEvent(d, &e);
// }
// if(strcicmp(prior_app, "dolphin") == 0){
// XNextEvent(d, &e);
// }
// if(strcicmp(current_app, "dolphin") == 0 && e.type == 18 && last_event == 16){
// XNextEvent(d, &e);
// }
// Reference http://www.rahul.net/kenton/xproto/xevents_errors.html
// event type 17 - DestroyNotify
// event type 18 - UnmapNotify
// Dismiss the following events by initiating another XNextEvent
while(e.type == 17 || e.type == 18){
XNextEvent(d, &e);
}
w = get_focus_window(d);
w = get_top_window(d, w);
w = get_top_window(d, w, e.type, last_event, current_app);
w = get_named_window(d, w);
}
}