TempleOSTS_140317.ISO

Demo/Doc/MenuButton.CPP

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+//This example shows buttons.  Buttons return a menu val
+//unless you rig them to send macros.  Menu entries are
+//about the same as buttons, but don't have a border.
+
+
+I64 PopUpFreq()
+{ //See also $LK,"PopUpRangeI64",A="MN:PopUpRangeI64"$()
+  I64 i;
+  CDoc *doc=DocNew;
+  DocPrint(doc,"$$TX+CX,\"Set Freq\"$$\n" //Centered text
+	"$$CM+LX,2,4$$$$BT,\"100 Hz\",LE=100$$"
+	"$$CM+LX,18,0$$$$BT,\"200 Hz\",LE=200$$"
+	"$$CM+LX,2,4$$$$BT,\"400 Hz\",LE=400$$"
+	"$$CM+LX,18,0$$$$BT,\"800 Hz\",LE=800$$\n");
+  i=PopUpMenu(doc);
+  if (i<0) i=0; // <SHIFT-ESC>
+  DocDel(doc);
+  return i;
+}
+
+#define MU_NOTHING	0
+#define MU_SET_FREQ	1
+#define MU_SND_ON	2
+#define MU_SND_OFF	3
+
+U0 MenuButton()
+{
+  Bool done=FALSE;
+  I64 i,j=0,freq=100;
+  I64 old_flags=DocPut->flags;
+//This allows keyboard navigation to skip nonselectible entries.
+  DocPut->flags|=DOCF_FORM;
+  do {
+    DocClear;
+//Use <CTRL-L> to generate cursor movement expressions and check "Quote".
+    "$$CM+CX-RE,-4$$Menu Demo\n\n";
+    "$$LM,8$$"; //Set left margin
+//These are buttons that return a val from a menu selection.
+    if (!j)
+      "\n$$BT,\"Snd On\",LE=MU_SND_ON$$\n\n\n";
+    else
+      "\n$$BT,\"Snd Off\",LE=MU_SND_OFF$$\n\n\n";
+    "\n$$BT,\"Set Freq\",LE=MU_SET_FREQ$$\n\n\n"
+    "\n$$BT,\"Nothing\",LE=MU_NOTHING$$\n\n\n"
+    "\n$$BT,\"Done\",LE=DOCM_CANCEL$$\n\n\n";
+    i=DocMenuDo(DocPut);
+    DocBottom;
+    switch (i) {
+      case MU_NOTHING:
+	break;
+      case MU_SND_ON:
+	j=freq;
+	Snd(j);
+	break;
+      case MU_SND_OFF:
+	j=0;
+	Snd(j);
+	break;
+      case MU_SET_FREQ:
+	freq=PopUpFreq;
+	if (j) {
+	  j=freq;
+	  Snd(j);
+	}
+	break;
+      default:
+	done=TRUE;
+    }
+  } while (!done);
+  DocPut->flags=DocPut->flags&~DOCF_FORM |
+		     old_flags & DOCF_FORM;
+  DocClear;
+  Snd(0);
+}
+
+MenuButton;