X11 programming, some questions
I would like to make a simple visualisation using X11. I don't want a fancy guy with buttons and stuff, I simply want to display an ordinary line chart in a window and that's it.
Since I have not that much experience in programming X11, I used this example code:
https://rosettacode.org/wiki/Window_creation/X11#Xlib
It compiles fine and works, but when the window it creates is closed, the error
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
after 11 requests (9 known processed) with 0 events remaining.
appears in the terminal. So I wonder what the reason for this could be and how it could be fixed?
x11
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
add a comment |
I would like to make a simple visualisation using X11. I don't want a fancy guy with buttons and stuff, I simply want to display an ordinary line chart in a window and that's it.
Since I have not that much experience in programming X11, I used this example code:
https://rosettacode.org/wiki/Window_creation/X11#Xlib
It compiles fine and works, but when the window it creates is closed, the error
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
after 11 requests (9 known processed) with 0 events remaining.
appears in the terminal. So I wonder what the reason for this could be and how it could be fixed?
x11
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
We're a knowledge base, not a help forum -- each question should be exactly one question, posed as a Minimal, Complete, and Verifiable example with everything necessary for someone to reproduce the problem themselves and test proposed answers.
– Charles Duffy
Nov 21 '18 at 18:56
add a comment |
I would like to make a simple visualisation using X11. I don't want a fancy guy with buttons and stuff, I simply want to display an ordinary line chart in a window and that's it.
Since I have not that much experience in programming X11, I used this example code:
https://rosettacode.org/wiki/Window_creation/X11#Xlib
It compiles fine and works, but when the window it creates is closed, the error
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
after 11 requests (9 known processed) with 0 events remaining.
appears in the terminal. So I wonder what the reason for this could be and how it could be fixed?
x11
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
I would like to make a simple visualisation using X11. I don't want a fancy guy with buttons and stuff, I simply want to display an ordinary line chart in a window and that's it.
Since I have not that much experience in programming X11, I used this example code:
https://rosettacode.org/wiki/Window_creation/X11#Xlib
It compiles fine and works, but when the window it creates is closed, the error
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
after 11 requests (9 known processed) with 0 events remaining.
appears in the terminal. So I wonder what the reason for this could be and how it could be fixed?
x11
x11
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
asked Nov 21 '18 at 18:47
T. PluessT. Pluess
1288
1288
We're a knowledge base, not a help forum -- each question should be exactly one question, posed as a Minimal, Complete, and Verifiable example with everything necessary for someone to reproduce the problem themselves and test proposed answers.
– Charles Duffy
Nov 21 '18 at 18:56
add a comment |
We're a knowledge base, not a help forum -- each question should be exactly one question, posed as a Minimal, Complete, and Verifiable example with everything necessary for someone to reproduce the problem themselves and test proposed answers.
– Charles Duffy
Nov 21 '18 at 18:56
We're a knowledge base, not a help forum -- each question should be exactly one question, posed as a Minimal, Complete, and Verifiable example with everything necessary for someone to reproduce the problem themselves and test proposed answers.
– Charles Duffy
Nov 21 '18 at 18:56
We're a knowledge base, not a help forum -- each question should be exactly one question, posed as a Minimal, Complete, and Verifiable example with everything necessary for someone to reproduce the problem themselves and test proposed answers.
– Charles Duffy
Nov 21 '18 at 18:56
add a comment |
1 Answer
1
active
oldest
votes
Use The Source, Luke.
while (1) {
XNextEvent(d, &e);
if (e.type == Expose) {
XFillRectangle(d, w, DefaultGC(d, s), 20, 20, 10, 10);
XDrawString(d, w, DefaultGC(d, s), 10, 50, msg, strlen(msg));
}
if (e.type == KeyPress)
break;
}
XCloseDisplay(d);
If you exit the loop by pressing a key, you call XCloseDisplay(). If you kill the window "from the outside" (say, with your mouse) that function is never called. The process goes away abruptly, and X warns you about it.
On my system at least, kill(1) doesn't produce the warning, either. I suspect there's some interaction with your window manager, something you'll deal with later in your xlib education. :-)
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
add a comment |
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1 Answer
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1 Answer
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Use The Source, Luke.
while (1) {
XNextEvent(d, &e);
if (e.type == Expose) {
XFillRectangle(d, w, DefaultGC(d, s), 20, 20, 10, 10);
XDrawString(d, w, DefaultGC(d, s), 10, 50, msg, strlen(msg));
}
if (e.type == KeyPress)
break;
}
XCloseDisplay(d);
If you exit the loop by pressing a key, you call XCloseDisplay(). If you kill the window "from the outside" (say, with your mouse) that function is never called. The process goes away abruptly, and X warns you about it.
On my system at least, kill(1) doesn't produce the warning, either. I suspect there's some interaction with your window manager, something you'll deal with later in your xlib education. :-)
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
add a comment |
Use The Source, Luke.
while (1) {
XNextEvent(d, &e);
if (e.type == Expose) {
XFillRectangle(d, w, DefaultGC(d, s), 20, 20, 10, 10);
XDrawString(d, w, DefaultGC(d, s), 10, 50, msg, strlen(msg));
}
if (e.type == KeyPress)
break;
}
XCloseDisplay(d);
If you exit the loop by pressing a key, you call XCloseDisplay(). If you kill the window "from the outside" (say, with your mouse) that function is never called. The process goes away abruptly, and X warns you about it.
On my system at least, kill(1) doesn't produce the warning, either. I suspect there's some interaction with your window manager, something you'll deal with later in your xlib education. :-)
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
add a comment |
Use The Source, Luke.
while (1) {
XNextEvent(d, &e);
if (e.type == Expose) {
XFillRectangle(d, w, DefaultGC(d, s), 20, 20, 10, 10);
XDrawString(d, w, DefaultGC(d, s), 10, 50, msg, strlen(msg));
}
if (e.type == KeyPress)
break;
}
XCloseDisplay(d);
If you exit the loop by pressing a key, you call XCloseDisplay(). If you kill the window "from the outside" (say, with your mouse) that function is never called. The process goes away abruptly, and X warns you about it.
On my system at least, kill(1) doesn't produce the warning, either. I suspect there's some interaction with your window manager, something you'll deal with later in your xlib education. :-)
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
Use The Source, Luke.
while (1) {
XNextEvent(d, &e);
if (e.type == Expose) {
XFillRectangle(d, w, DefaultGC(d, s), 20, 20, 10, 10);
XDrawString(d, w, DefaultGC(d, s), 10, 50, msg, strlen(msg));
}
if (e.type == KeyPress)
break;
}
XCloseDisplay(d);
If you exit the loop by pressing a key, you call XCloseDisplay(). If you kill the window "from the outside" (say, with your mouse) that function is never called. The process goes away abruptly, and X warns you about it.
On my system at least, kill(1) doesn't produce the warning, either. I suspect there's some interaction with your window manager, something you'll deal with later in your xlib education. :-)
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
answered Nov 21 '18 at 20:19
James K. LowdenJames K. Lowden
5,28211025
5,28211025
add a comment |
add a comment |
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We're a knowledge base, not a help forum -- each question should be exactly one question, posed as a Minimal, Complete, and Verifiable example with everything necessary for someone to reproduce the problem themselves and test proposed answers.
– Charles Duffy
Nov 21 '18 at 18:56