barcode label printing in vb.net <Menu> <MenuItem <MenuItem <MenuItem </Menu> in Font

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<Menu> <MenuItem <MenuItem <MenuItem </Menu>
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Header="First" Header="Second" Header="Third"
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The Header contains the menu label.
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Click="MenuItemFirst_Click"/> Click="MenuItemSecond_Click"/> Click="MenuItemThird_Click"/>
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This assigns the event handler.
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On the left of Figure 10-2 is a screenshot that shows a window containing this menu. (The menu in the figure is inside a StackPanel, which constrains its size.) The drawing on the right of the figure shows the menu s structure.
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Figure 10-2. A menu consists of a single Menu object containing a list of MenuItem objects.
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CHAPTER 10 OTHER CONTROLS AND ELEMENTS
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As I stated earlier, the Menu object contains a set of MenuItem objects that comprise the top-level menu. MenuItems, however, can contain nested MenuItems, which act as submenus. The following markup shows two MenuItems contained in the content part of the first MenuItem: <Menu> <MenuItem Header="File"> <MenuItem Header="New Game" <MenuItem Header="Exit" </MenuItem> <MenuItem Header="Help" </Menu>
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Click="MenuItemNewGame_Click"/> Click="MenuItemExit_Click"/> Click="MenuItemHelp_Click"/>
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Figure 10-3 shows, on the left, a window that contains this menu and, on the right, the nested structure of the menu.
Figure 10-3. Submenus are MenuItems nested in other MenuItems. The event handlers in this simple example just pop up message boxes. The following is the code-behind: public partial class Window1 : Window { public Window1() { InitializeComponent(); } private void MenuItemNewGame_Click( object sender, RoutedEventArgs e ) { MessageBox.Show( "Clicked New Game", "Menu Info" ); } private void MenuItemExit_Click( object sender, RoutedEventArgs e ) { MessageBox.Show( "Clicked Exit", "Menu Info" ); } private void MenuItemHelp_Click( object sender, RoutedEventArgs e ) { MessageBox.Show( "Clicked Help", "Menu Info" ); } }
Remember Submenus are implemented as nested MenuItems not as nested Menus.
CHAPTER 10 OTHER CONTROLS AND ELEMENTS
Adorning the MenuItem
So far, the only thing you ve seen on a menu is text. The area occupied by a MenuItem, however, has space for other useful information as well, as shown in Figure 10-4. You can set a check mark to the left of the menu label by setting the MenuItem s IsChecked property to true. You can initialize this property in the markup to be either checked or unchecked and then change its value in the code-behind when appropriate. Alternatively, you can have WPF automatically toggle the check mark on the MenuItem by setting the MenuItem s IsCheckable property to true. With this set, you don t have to programmatically set the value of IsChecked to true and false.
You can set the Icon property to display an image. Despite the name of the property, it can be any type of image, not just an image of the icon type.
You can also add text to the right of the menu label by assigning it to the InputGestureText property. This is typically used to show keyboard shortcuts for the menu item. Setting this text, however, doesn t implement the functionality. You must still hook up the shortcut code to the menu item yourself, which is a bit of work unless you use commands. (You ll learn more about this in a moment.)
Figure 10-4. You can set an image or a check mark to the left of the menu label and a string to the right of the label. The following is the markup for the menu in Figure 10-4: <Menu> <MenuItem Header="File"> <MenuItem Header="New Game" Click="MenuItemNewGame_Click" InputGestureText="Alt+N"> Set text on right. <MenuItem.Icon> <Image Source="Card.bmp"/> Set image on left. </MenuItem.Icon> </MenuItem> <MenuItem Header="Shuffle Sound" Click="MenuItemExit_Click" IsChecked="True" InputGestureText="Alt+S"/> Set check and text. </MenuItem> </Menu>
CHAPTER 10 OTHER CONTROLS AND ELEMENTS
Other Content As the Menu Header
The menu labels you ve seen so far have been text, but the Header property can be assigned an object of any class derived from UIElement. For example, Figure 10-5 shows a menu that uses bitmap images as the Header content.
Figure 10-5. You can use any UIElement-derived object as the menu label, including Images. The following markup produces the menu in Figure 10-5. Notice that to set the Header to an Image, you must use the property element syntax. <Menu> <MenuItem Header="File"> <MenuItem InputGestureText="Alt+K"> <MenuItem.Header> <Image Source="kccard.bmp"/> </MenuItem.Header> </MenuItem> <MenuItem InputGestureText="Alt+Q"> <MenuItem.Header> <Image Source="qccard.bmp"/> </MenuItem.Header> </MenuItem> <MenuItem InputGestureText="Alt+J"> <MenuItem.Header> <Image Source="jccard.bmp"/> </MenuItem.Header> </MenuItem> </MenuItem> </Menu>
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