Subwindows in Java

Encode QR Code in Java Subwindows
CHAPTER
Scanning QR-Code In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
Subwindows
QR-Code Printer In Java
Using Barcode printer for Java Control to generate, create QR Code 2d barcode image in Java applications.
Subwindows are strange and interesting creatures in NCurses. From one perspective, they are exactly what you imagine them to be: tiny windows within other windows. But at the same time, because of the way NCurses implements subwindows, they are not what they seem to be. I once struggled with the concept of subwindows in NCurses. In fact, much of the documentation on the Internet claims that subwindows are buggy and should be avoided. That isn t exactly correct. With proper understanding, subwindows can be time-saving gizmos in NCurses, not to be avoided at all.
QR Code Decoder In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
The Thing with Subwindows
Barcode Creator In Java
Using Barcode encoder for Java Control to generate, create barcode image in Java applications.
Subwindows are like real windows in NCurses in that they share the same data structure. You use the same WINDOW variable to create a subwindow as you do a full window. NCurses functions that control or manipulate a window also control and manipulate subwindows (with a few exceptions). But a subwindow is not the same thing as a real window. The main difference between a subwindow and a real window is that subwindows share memory with a parent window. So when you put a character to a subwindow, you re also placing that character into the parent window as well.
Recognizing Bar Code In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
9
QR Code 2d Barcode Generator In Visual C#.NET
Using Barcode creator for .NET framework Control to generate, create QR Code ISO/IEC18004 image in VS .NET applications.
Subwindows
QR Code Creation In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create QR Code ISO/IEC18004 image in ASP.NET applications.
For example, in Figure 9-1, it appears that there are two windows on the screen. The smaller window is a subwindow, which has different color attributes from the parent window. The parent window shows the text Hello, son, and the subwindow displays Hello, Dad. Even so, the text Hello, Dad also exists in the parent window. The memory is shared. If you were to change the text in the subwindow, you would also be changing or adding text to the parent. Likewise, the parent window can change text in the subwindow. This can be confusing and frustrating but only when you assume that a subwindow is like a regular window. It is not. The best way to think of a subwindow is merely as a convenient way to reference a specific portion of the parent. Figure 9-2 illustrates an example of using subwindows to reference a region on the screen. The areas boxed at the bottom of the screen in Figure 9-2 contain information that is occasionally rewritten or updated. Rather than have to do a lot of complex cursor-positioning math, simply create a subwindow in the proper spot; then use that window as a reference to position the cursor. This is one example of how subwindows can be used to define regions of the screen instead of separate windows. As long as you consider the subwindow to be merely a reference to a specific portion of the parent, you ll do well with subwindows. But when you believe the subwindow to be separate and unique, like a real window, you ll get into all sorts of trouble.
Draw QR In .NET Framework
Using Barcode drawer for .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
Figure 9-1: A glorious subwindow
QR Code ISO/IEC18004 Maker In VB.NET
Using Barcode generator for .NET framework Control to generate, create Denso QR Bar Code image in .NET framework applications.
9
Code 128 Code Set B Creator In Java
Using Barcode printer for Java Control to generate, create Code-128 image in Java applications.
main (window of interdeterminate size) C7D0044 Lorem ipsum dolor sit amet, consectetuer adispiscing elit, sed diam nonummy nibh euismod tincisunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrus exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Lorem. Ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod Tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam. Quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.
Draw Barcode In Java
Using Barcode drawer for Java Control to generate, create bar code image in Java applications.
Subwindows
GS1-128 Generator In Java
Using Barcode creation for Java Control to generate, create EAN / UCC - 13 image in Java applications.
C7D0045
2 Of 5 Interleaved Creation In Java
Using Barcode generator for Java Control to generate, create 2/5 Interleaved image in Java applications.
C7D0046 C7D0047 C7E000A
Data Matrix Scanner In .NET Framework
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Top part of window used to display scrolling text
UPC-A Printer In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create UCC - 12 image in ASP.NET applications.
Event C7D0046 C7D0047 C7E000A
Read Code 39 In .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
Timestamp Wednesday, June 18, 2008 @ 21:30 Wednesday, June 18, 2008 @ 23:47 Yesterday @ 04:51
UCC-128 Creation In Visual Basic .NET
Using Barcode creation for .NET framework Control to generate, create UCC-128 image in VS .NET applications.
45,848 K 67,494 K 8,777 K 23 K >1 K subwindow B displays information
EAN-13 Generator In Visual C#.NET
Using Barcode generator for .NET Control to generate, create EAN / UCC - 13 image in .NET applications.
subwindow A displays information
Make Code 3 Of 9 In Visual Studio .NET
Using Barcode generation for .NET Control to generate, create USS Code 39 image in Visual Studio .NET applications.
Figure 9-2: An example of a useful subwindow
Code 128 Code Set A Creation In .NET Framework
Using Barcode generation for .NET Control to generate, create Code 128C image in .NET framework applications.
Making Subwindows
Subwindows have all of the basic attributes of real windows: a name, size, location, unique cursor coordinates, and so on. Because they share memory with the parent, the subwindow must reside completely within the parent window. And, naturally, subwindows are created by using their own unique functions: subwin(win,rows,cols,y,x) derwin(win,rows,cols,y,x) The only difference between these functions has to do with the final two arguments. With subwin(), y and x are coordinates relative to the screen; in derwin(), y and x are relative to the parent window.