asp.net mvc qr code generator CONTAINER WIDGETS in Font

Encoder Data Matrix ECC200 in Font CONTAINER WIDGETS

CHAPTER 3 CONTAINER WIDGETS
DataMatrix Generator In None
Using Barcode generation for Font Control to generate, create Data Matrix image in Font applications.
www.OnBarcode.com
EAN-13 Drawer In None
Using Barcode generation for Font Control to generate, create EAN 13 image in Font applications.
www.OnBarcode.com
The last two parameters of gtk_table_attach() specify pixels of horizontal and vertical padding that should be added between the child and its neighbor cells. void gtk_table_attach_defaults (GtkTable *table, GtkWidget *child, guint left, guint right, guint top, guint bottom); As with boxes, you do not need to specify the full set of parameters when adding a child. You can use gtk_table_attach_defaults() to add a child without specifying attach and padding options. When using this function, GTK_EXPAND | GTK_FILL will be used for each attach option, and no padding will be added.
Data Matrix 2d Barcode Drawer In None
Using Barcode maker for Font Control to generate, create ECC200 image in Font applications.
www.OnBarcode.com
Barcode Creator In None
Using Barcode generation for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Table Spacing
PDF 417 Generator In None
Using Barcode printer for Font Control to generate, create PDF417 image in Font applications.
www.OnBarcode.com
Code 128B Printer In None
Using Barcode creator for Font Control to generate, create Code 128 Code Set B image in Font applications.
www.OnBarcode.com
You can specify the spacing between columns or rows with gtk_table_attach(), but GTK+ provides four methods for changing these after adding a child. If you want to set the spacing for every column in a table, you can use gtk_table_set_col_spacings(). This function was used in Listing 3-4 to add five pixels of spacing. GTK+ also provides gtk_table_set_row_spacings() to add padding between rows. These functions will override any previous settings of the table. void gtk_table_set_col_spacings (GtkTable *table, guint spacing); You may also set the spacing of one specific column or row with gtk_table_set_col_spacing() or gtk_table_set_row_spacing(). These functions will add spacing between the child and its neighbors to the left and right of the widget or above and below it. void gtk_table_set_col_spacing (GtkTable *table, guint column, guint spacing);
Generating UPC Code In None
Using Barcode printer for Font Control to generate, create Universal Product Code version A image in Font applications.
www.OnBarcode.com
Paint British Royal Mail 4-State Customer Code In None
Using Barcode drawer for Font Control to generate, create British Royal Mail 4-State Customer Barcode image in Font applications.
www.OnBarcode.com
Fixed Containers
Draw ECC200 In None
Using Barcode drawer for Online Control to generate, create Data Matrix image in Online applications.
www.OnBarcode.com
Encoding Data Matrix 2d Barcode In .NET
Using Barcode creation for .NET framework Control to generate, create Data Matrix 2d barcode image in .NET framework applications.
www.OnBarcode.com
The GtkFixed widget is a type of layout container that allows you to place widgets by the pixel. There are many problems that can arise when using this widget, but before we explore the drawbacks, let us look at a simple example. Listing 3-5 creates a GtkFixed widget that contains two buttons, one found at each of the locations (0,0) and (20,30), with respect to the top-left corner of the widget.
Scan European Article Number 13 In VB.NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
USS Code 39 Decoder In Visual Basic .NET
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
CHAPTER 3 CONTAINER WIDGETS
Scan ANSI/AIM Code 128 In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Paint Code128 In None
Using Barcode creation for Online Control to generate, create Code 128B image in Online applications.
www.OnBarcode.com
Listing 3-5. Specifying Exact Locations (fixed.c) #include <gtk/gtk.h> int main (int argc, char *argv[]) { GtkWidget *window, *fixed, *button1, *button2; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_title (GTK_WINDOW (window), "Fixed"); gtk_container_set_border_width (GTK_CONTAINER (window), 10); fixed = gtk_fixed_new (); button1 = gtk_button_new_with_label ("Pixel by pixel ..."); button2 = gtk_button_new_with_label ("you choose my fate."); g_signal_connect_swapped (G_OBJECT (button1), "clicked", G_CALLBACK (gtk_widget_destroy), (gpointer) window); g_signal_connect_swapped (G_OBJECT (button2), "clicked", G_CALLBACK (gtk_widget_destroy), (gpointer) window); /* Place two buttons on the GtkFixed container. */ gtk_fixed_put (GTK_FIXED (fixed), button1, 0, 0); gtk_fixed_put (GTK_FIXED (fixed), button2, 20, 30); gtk_container_add (GTK_CONTAINER (window), fixed); gtk_widget_show_all (window); gtk_main (); return 0; } The GtkFixed widget, initialized with gtk_fixed_new(), allows you to place widgets with a specific size in a specific location. Placing widgets is performed with gtk_fixed_put(), at specified horizontal and vertical positions. void gtk_fixed_put (GtkFixed *fixed, GtkWidget *child, gint x, gint y);
PDF417 Drawer In None
Using Barcode maker for Software Control to generate, create PDF 417 image in Software applications.
www.OnBarcode.com
Make EAN13 In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create GTIN - 13 image in ASP.NET applications.
www.OnBarcode.com
CHAPTER 3 CONTAINER WIDGETS
Code 128 Encoder In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
www.OnBarcode.com
Draw Barcode In Objective-C
Using Barcode generation for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
The top-left corner of the fixed container is referred to by location (0,0). You should only be able to specify real locations for widgets or locations in positive space. The fixed container will resize itself, so every widget is completely visible. If you need to move a widget after it has been placed within a GtkFixed container, you can use gtk_fixed_move(). You need to be careful not to overlap a widget that has already been placed. The GtkFixed widget will not provide notification in the case of overlap. Instead, it will try to render the window with unpredictable results. void gtk_fixed_move (GtkFixed *fixed, GtkWidget *child, gint x_position, gint y_position); This brings us to the inherent problems with using the GtkFixed widget. The first problem is that your users are free to use whatever theme they want. This means that the size of text on the user s machine may differ from the size of text on your machine unless you explicitly set the font. The sizes of widgets vary among different user themes as well. This can cause misalignment and overlap. This is illustrated in Figure 3-6, which shows two screenshots of Listing 3-5, one with a small font size and one with a larger font size.
Generate EAN13 In Java
Using Barcode generator for Java Control to generate, create EAN13 image in Java applications.
www.OnBarcode.com
Encode Code 39 In None
Using Barcode maker for Software Control to generate, create Code 3 of 9 image in Software applications.
www.OnBarcode.com
Figure 3-6. Problems caused by different font sizes in a GtkFixed container You can explicitly set the size and font of text to avoid overlap, but this is not advised in most cases. Accessibility options are provided for users with low vision. If you change their fonts, some users may not be able to read the text on the screen. Another problem with using GtkFixed arises when your application is translated into other languages. A user interface may look great in English, but the displayed strings in other languages may cause display problems, because the width will not be constant. Furthermore, languages that are read right to left, such as Hebrew and Arabic, cannot be properly mirrored with the GtkFixed widget. It is best to use a variable-sized container such as GtkBox or GtkTable in this case. Finally, it can be quite a pain adding and removing widgets from your graphical interface when using a GtkFixed container. Changing the user interface will require you to reposition all of your widgets. If you have an application with a lot of widgets, this presents a long-term maintenance problem. On the other hand, you have tables, boxes, and various other automatically formatting containers. If you need to add or remove a widget from the user interface, it is as easy as adding or removing a cell. This makes maintenance much more efficient, which is something you should consider in large applications.
Copyright © OnBarcode.com . All rights reserved.