Initial revision

git-svn-id: file:///fltk/svn/fltk/trunk@2 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 90 insertions, 0 deletions

diff --git a/test/ask.cxx b/test/ask.cxx
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index 000000000..304ae1d71
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+++ b/test/ask.cxx
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+/* 	ask.C
+
+	Demonstrates how to use readqueue to see if a button has been
+	pushed, and to see if a window has been closed, thus avoiding
+	the need to define callbacks.
+
+	This also demonstrates how to trap attempts by the user to
+	close the last window by overriding Fl::exit
+
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <FL/Fl.H>
+#include <FL/Fl_Window.H>
+#include <FL/Fl_Input.H>
+#include <FL/Fl_Button.H>
+#include <FL/Fl_Return_Button.H>
+
+int get_string(char*buffer) {
+  Fl_Window window(320,75);
+  Fl_Input input(60, 10, 250, 25, "Input:");
+  input.value(buffer);
+  Fl_Button cancel(60, 40, 80, 25, "cancel");
+  Fl_Return_Button ok(150, 40, 80, 25, "OK");
+  window.hotspot(&cancel); // you must position modal windows
+  window.end();
+  window.set_modal();
+  window.show();
+  for (;;) {
+    Fl::wait();
+    Fl_Widget *o;
+    while ((o = Fl::readqueue())) {
+      if (o == &ok) {
+	strcpy(buffer,input.value());
+	return 1;
+      } else if (o == &cancel || o == &window) {
+	return 0;
+      }
+    }
+  }
+}
+
+void rename_me(Fl_Widget*o) {
+  if (get_string((char*)(o->label()))) o->redraw();
+}
+
+#if 1
+#include <FL/fl_ask.H>
+#include <stdlib.h>
+
+void window_callback(Fl_Widget*, void*) {
+  if (!fl_ask("Are you sure you want to quit?")) return;
+  exit(0);
+}
+#endif
+
+int main(int argc, char **argv) {
+  char buffer[128] = "test text";
+
+#if 1
+// this is a test to make sure automatic destructors work.  Pop up
+// the question dialog several times and make sure it don't crash.
+
+  Fl_Window window(200, 55);
+  Fl_Return_Button b(20, 10, 160, 35, buffer); b.callback(rename_me);
+  window.add(b);
+  window.resizable(&b);
+  window.show(argc, argv);
+
+// Also we test to see if the exit callback works:
+  window.callback(window_callback);
+
+  return Fl::run();
+
+#else
+// This is the demo as written in the documentation, it only creates
+// the popup window once:
+
+  if (get_string(buffer)) {
+    puts(buffer);
+  } else {
+    puts("cancel");
+  }
+  return 0;
+
+#endif
+
+}
+