mirror of https://github.com/fltk/fltk
91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
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/* ask.C
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Demonstrates how to use readqueue to see if a button has been
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pushed, and to see if a window has been closed, thus avoiding
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the need to define callbacks.
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This also demonstrates how to trap attempts by the user to
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close the last window by overriding Fl::exit
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*/
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#include <stdio.h>
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#include <string.h>
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Input.H>
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#include <FL/Fl_Button.H>
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#include <FL/Fl_Return_Button.H>
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int get_string(char*buffer) {
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Fl_Window window(320,75);
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Fl_Input input(60, 10, 250, 25, "Input:");
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input.value(buffer);
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Fl_Button cancel(60, 40, 80, 25, "cancel");
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Fl_Return_Button ok(150, 40, 80, 25, "OK");
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window.hotspot(&cancel); // you must position modal windows
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window.end();
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window.set_modal();
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window.show();
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for (;;) {
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Fl::wait();
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Fl_Widget *o;
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while ((o = Fl::readqueue())) {
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if (o == &ok) {
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strcpy(buffer,input.value());
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return 1;
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} else if (o == &cancel || o == &window) {
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return 0;
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}
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}
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}
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}
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void rename_me(Fl_Widget*o) {
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if (get_string((char*)(o->label()))) o->redraw();
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}
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#if 1
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#include <FL/fl_ask.H>
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#include <stdlib.h>
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void window_callback(Fl_Widget*, void*) {
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if (!fl_ask("Are you sure you want to quit?")) return;
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exit(0);
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}
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#endif
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int main(int argc, char **argv) {
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char buffer[128] = "test text";
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#if 1
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// this is a test to make sure automatic destructors work. Pop up
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// the question dialog several times and make sure it don't crash.
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Fl_Window window(200, 55);
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Fl_Return_Button b(20, 10, 160, 35, buffer); b.callback(rename_me);
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window.add(b);
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window.resizable(&b);
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window.show(argc, argv);
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// Also we test to see if the exit callback works:
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window.callback(window_callback);
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return Fl::run();
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#else
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// This is the demo as written in the documentation, it only creates
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// the popup window once:
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if (get_string(buffer)) {
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puts(buffer);
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} else {
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puts("cancel");
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}
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return 0;
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#endif
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}
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