Return Value in Java

Maker QR Code 2d barcode in Java Return Value
Return Value
QR Code 2d Barcode Reader In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
The value of OK is set in NCURSES.H to 0.
Draw QR Code 2d Barcode In Java
Using Barcode encoder for Java Control to generate, create QR Code ISO/IEC18004 image in Java applications.
Notes
QR Code JIS X 0510 Decoder In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Not every function returns OK upon success. Some functions are documented as returning ERR upon failure, but any value other than ERR not specifically OK upon success. Note that OK might be defined as being zero, therefore something like:
Barcode Creator In Java
Using Barcode creation for Java Control to generate, create barcode image in Java applications.
while( function() )
Bar Code Decoder In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
cannot work based upon the function s success if the success returned is OK and OK is defined as zero. OK s counterpart is the ERR constant. See ERR.
QR Code Encoder In Visual C#
Using Barcode creator for .NET Control to generate, create QR image in Visual Studio .NET applications.
Example
Painting QR Code ISO/IEC18004 In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
if( putwin(menu,mfile) != OK)
Creating Quick Response Code In .NET
Using Barcode drawer for .NET framework Control to generate, create QR Code 2d barcode image in Visual Studio .NET applications.
Appendix A
QR Code Encoder In VB.NET
Using Barcode generation for VS .NET Control to generate, create QR Code 2d barcode image in .NET framework applications.
NCurses Library Reference
Data Matrix ECC200 Encoder In Java
Using Barcode printer for Java Control to generate, create Data Matrix ECC200 image in Java applications.
The statement checks to see if the putwin() function has not returned OK, meaning that the operation has failed.
Code 128B Creation In Java
Using Barcode creator for Java Control to generate, create Code 128 image in Java applications.
Sample Program
Encoding Code39 In Java
Using Barcode printer for Java Control to generate, create Code 39 Extended image in Java applications.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 #include <ncurses.h> int main(void) { int y = 0,x = 0, r; initscr(); addstr( You Move The Cursor!\n ); addstr( Enter the Y (row) coordinate: ); refresh(); scanw( %d ,&y); addstr( Enter the X (column) coordinate: ); refresh(); scanw( %d ,&x); r = move(y,x); if(r == ERR) { mvaddstr(3,0, You have moved the cursor! ); move(y,x); } else mvaddstr(3,0, You cannot move the cursor there! ); refresh(); getch(); endwin(); return 0; }
Generate UCC - 14 In Java
Using Barcode creator for Java Control to generate, create DUN - 14 image in Java applications.
Sample output:
Drawing UPC-A Supplement 2 In Visual Studio .NET
Using Barcode encoder for VS .NET Control to generate, create Universal Product Code version A image in .NET applications.
You Move The Cursor! Enter the Y (row) coordinate: 50 Enter the X (column) coordinate: 5 You cannot move the cursor there!
Creating Bar Code In VB.NET
Using Barcode generator for .NET framework Control to generate, create bar code image in VS .NET applications.
Also See
Code 128A Scanner In .NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET framework applications.
Appendix A
UCC - 12 Decoder In VS .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET framework applications.
NCurses Library Reference
Make Barcode In .NET Framework
Using Barcode generation for .NET framework Control to generate, create bar code image in .NET applications.
overlay()
Code 39 Encoder In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create Code 3 of 9 image in ASP.NET applications.
The overlay() function takes text from one window and places that text into the blank portions of another window.
Data Matrix Generator In Visual C#.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create Data Matrix image in VS .NET applications.
Man Page Format
int overlay(const WINDOW *srcwin, WINDOW *dstwin);
Format Reference
srcwin is a WINDOW pointer representing the source window, from which text is copied. dstwin is a WINDOW pointer representing the destination, the window where text from srcwin is pasted.
Return Value
The function returns OK upon success, or ERR when there is a problem.
Notes
With the overlay() function, only the blank parts of the destination window are over-written with text from the source window. Text from srcwin will not replace text in dstwin, neither will text attributes be copied to the dstwin. srcwin and dstwin do not need to be the same size. However:
The two windows must overlap. It is only the overlapping portion of the windows that is overlaid. When the two windows do not overlap, overlay() returns ERR.
The overlay() function behaves the same as the copywin() function with the TRUE argument.
Example
overlay(first,second);
After the statement, locations where window first overlaps window second will be changed; any blank spots in window second will be filled by overlapping text from window first.
Appendix A
NCurses Library Reference
Sample Program
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 #include <ncurses.h> int main(void) { WINDOW *alpha,*beta; int x; initscr(); start_color(); init_pair(1,COLOR_WHITE,COLOR_BLUE); init_pair(2,COLOR_WHITE,COLOR_RED); /* create and color two side-by-side windows */ alpha = newwin(5,30,0,0); wbkgd(alpha,COLOR_PAIR(1)); beta = newwin(5,30,1,2); wbkgd(beta,COLOR_PAIR(2)); /* populate the windows with text */ for(x=0;x<75;x++) { wprintw(alpha, O ); wprintw(beta, X ); } wrefresh(alpha); wrefresh(beta); getch(beta); /* copy from window beta to window alpha */ overlay(beta,alpha); wrefresh(alpha); wrefresh(beta); wgetch(beta); endwin(); return 0; }
Sample output: Two windows appear, one blue with Os and another red with Xs. The two windows overlap for all but one row and column. Pressing Enter copies the Xs from the red window to the blue.
Also See
10, copywin(), overwrite(), dupwin()
Appendix A
NCurses Library Reference
overwrite()
The overwrite() function takes text from one window and pastes it into another window, replacing the second window s text contents and attributes.
Man Page Format
int overwrite(const WINDOW *srcwin, WINDOW *dstwin);
Format Reference
srcwin is a WINDOW pointer representing the source window, from which text is copied. dstwin is a WINDOW pointer representing the destination, the window where text from srcwin is pasted.
Return Value
The function returns OK or ERR upon success or failure, respectively.
Notes
The overwrite() function literally overwrites the contents of srcwin with dstwin; both text and attributes from srcwin replace text in dstwin. srcwin and dstwin do not need to be the same size, but the two windows must overlap. Only the overlapping portion of the windows is affected by the overwrite() function. When the two windows do not overlap, overlay() returns ERR. The overwrite() function behaves the same as the copywin() function with the FALSE argument.