次の例は、DtMenuButton ウィジェットの作成方法と使用方法を示しています。このコードは、/usr/dt/examples/dtwidget ディレクトリの controls.c デモの一部です。
/* * 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); }