93 lines
1.7 KiB
C++
93 lines
1.7 KiB
C++
// 6 december 2015
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#include <thread>
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#include <chrono>
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#include <mutex>
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#include <condition_variable>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include "../ui.h"
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using namespace std;
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uiMultilineEntry *e;
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condition_variable cv;
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mutex m;
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unique_lock<mutex> ourlock(m);
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thread *timeThread;
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void sayTime(void *data)
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{
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char *s = (char *) data;
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uiMultilineEntryAppend(e, s);
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delete s;
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}
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void threadproc(void)
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{
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ourlock.lock();
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while (cv.wait_for(ourlock, chrono::seconds(1)) == cv_status::timeout) {
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time_t t;
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char *base;
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char *s;
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t = time(NULL);
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base = ctime(&t);
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s = new char[strlen(base) + 1];
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strcpy(s, base);
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uiQueueMain(sayTime, s);
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}
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}
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int onClosing(uiWindow *w, void *data)
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{
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cv.notify_all();
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// C++ throws a hissy fit if you don't do this
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// we might as well, to ensure no uiQueueMain() gets in after uiQuit()
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timeThread->join();
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uiQuit();
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return 1;
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}
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void saySomething(uiButton *b, void *data)
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{
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uiMultilineEntryAppend(e, "Saying something\n");
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}
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int main(void)
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{
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uiInitOptions o;
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uiWindow *w;
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uiBox *b;
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uiButton *btn;
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memset(&o, 0, sizeof (uiInitOptions));
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if (uiInit(&o) != NULL)
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abort();
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w = uiNewWindow("Hello", 320, 240, 0);
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uiWindowSetMargined(w, 1);
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b = uiNewVerticalBox();
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uiBoxSetPadded(b, 1);
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uiWindowSetChild(w, uiControl(b));
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e = uiNewMultilineEntry();
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uiMultilineEntrySetReadOnly(e, 1);
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btn = uiNewButton("Say Something");
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uiButtonOnClicked(btn, saySomething, NULL);
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uiBoxAppend(b, uiControl(btn), 0);
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uiBoxAppend(b, uiControl(e), 1);
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// timeThread needs to lock ourlock itself - see http://stackoverflow.com/a/34121629/3408572
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ourlock.unlock();
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timeThread = new thread(threadproc);
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uiWindowOnClosing(w, onClosing, NULL);
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uiControlShow(uiControl(w));
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uiMain();
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return 0;
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}
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