Example of DtMenuButton Widget

The following example shows how to create and use a DtMenuButton widget. You can find this code as part of the controls.c demo in the /usr/dt/examples/dtwidget directory.

/*
  * Example code for DtMenuButton
  */  

#include Dt/DtMenuButton.h  

/* MenuButton custom glyph */  

#define menu_glyph_width 16 
#define menu_glyph_height 16 
static unsigned char menu_glyph_bits[] = {
 	0xe0, 0x03, 0x98, 0x0f, 0x84, 0x1f, 0x82, 0x3f, 0x82, 0x3f, 0x81,
 	0x7f, 0x81, 0x7f, 0xff, 0x7f, 0xff, 0x40, 0xff, 0x40, 0xfe, 0x20, 0xfe,
 	0x20, 0xfc, 0x10, 0xf8, 0x0c, 0xe0, 0x03, 0x00, 0x00};

static void CreateMenuButtons(Widget parent) {
     Widget menuButton, submenu, titleLabel, button;
     Pixmap cascadePixmap;
     Pixel fg, bg;
     Cardinal depth;
     XmString labelString;
     Arg args[20];
     int i, n;

      /* Create title label */

     labelString = XmStringCreateLocalized("MenuButton Widget");
     n = 0;
     XtSetArg(args[n], XmNlabelString, labelString); n++;
     titleLabel = XmCreateLabel(parent, "title", args, n);
     XtManageChild(titleLabel);
     XmStringFree(labelString);

     /*
      * Create a MenuButton.
      * Add push buttons to the built-in popup menu.
      */

     labelString = XmStringCreateLocalized("Action"); n = 0;
     XtSetArg(args[n], XmNlabelString, labelString); n++;
     menuButton = DtCreateMenuButton(parent, "menuButton1", args, n);
     XtManageChild(menuButton);
     XmStringFree(labelString);
     XtVaGetValues(menuButton, DtNsubMenuId, &submenu, NULL);
     button = XmCreatePushButton(submenu, "Push", NULL, 0);
     XtManageChild(button);
     button = XmCreatePushButton(submenu, "Pull", NULL, 0);
     XtManageChild(button);
     button = XmCreatePushButton(submenu, "Turn", NULL, 0);
     XtManageChild(button);

     /*
      * Create a MenuButton.
      * Replace the built-in popup menu with a tear-off menu.
      * Add a custom pixmap in the colors of the MenuButton.
      */

     labelString = XmStringCreateLocalized("Movement");
     n = 0;
     XtSetArg(args[n], XmNlabelString, labelString); n++;
  	  menuButton = DtCreateMenuButton(parent, "menuButton1", args, n);
     XtManageChild(menuButton);
     XmStringFree(labelString);

     /* Create a tear-off menu */

     n = 0;
     XtSetArg(args[0], XmNtearOffModel, XmTEAR_OFF_ENABLED); n++;
     submenu = XmCreatePopupMenu(menuButton, "submenu", args, n);
     button = XmCreatePushButton(submenu, "Run", NULL, 0);
     XtManageChild(button);
     button = XmCreatePushButton(submenu, "Jump", NULL, 0);
     XtManageChild(button);
     button = XmCreatePushButton(submenu, "Stop", NULL, 0);
     XtManageChild(button);

     XtVaSetValues(menuButton, DtNsubMenuId, submenu, NULL);

     /* Create a pixmap using the menu button's colors and depth */

     XtVaGetValues(menuButton,
 			XmNforeground, &fg,
 			XmNbackground, &bg,
 			XmNdepth, &depth,
 			NULL);

     cascadePixmap = XCreatePixmapFromBitmapData(XtDisplay
 	  (menuButton),DefaultRootWindow(XtDisplay
 	  (menuButton)),
 	  (char*)menu_glyph_bits,
 	  menu_glyph_width, menu_glyph_height,
     fg, bg, depth);
     XtVaSetValues(menuButton, DtNcascadePixmap, cascadePixmap,
 	  NULL); 
}