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1475 - Tcl/Tk - updating your display while tasks are running
Let me make two statements: 1. When you are popping up a new window from your program, the very last thing you want to see happen is for the window to gradually appear, with bits of it being resized as it comes on the screen - not only is such an operation irritating on the eye, but also it's burni ....

1474 - Using Tcl/Tk resource files for flexible applications
If you're looking to write a Tcl/Tk application that can be flexibly configured, don't forget to use named resources. Here are two displays from the same program: So - how did I get the difference in colour and text labels? 1. I drew the buttons WITHOUT ANY TEXT AT ALL, and I did NOT specify a ba ....

1473 - Making a variable dynamically visible in a Tcl/Tk GUI
set bill "and Ben" label .about -textvariable bill button .first -text "First" -command {set bill Bradshaw} button .second -text "Second" -command {set bill Bailey} button .done -text quit -command exit pack .about .first .second .done Tcl/Tk's -textvariable option, on commands like label and butto ....

1472 - The Horse goes on and on
The number of blogs that I have seen come, and go .... and yet "The Horse's Mouth" carries on. I don't know how many posts I've made exactly, but it's approaching 1500. Why the difference? I suspect it's because many blogs don't have a long-term purpose and so the blogger starts off with a fit o ....

1471 - Cliff Lift simulator- Lynton to Lynmouth - in Tcl/Tk
In Tk, you can use the variable option to a slider and the textvariable option to a label or button (or some other widgets) to 'project' the value of a variable onto the display - either changing the text on a button, or moving a slider automatically when some value changes otherwise within the code ....

1470 - fill and expand on Tcl/Tk pack command
pack .this .that -expand true -fill both Why are there two different options expand and fill? Are they both needed? expand causes a widget to expand to fill the space available as a window is stretched, and fill causes a widget to be filled to the cell so that it lines up with other widgets. ....

1469 - Curley brackets v double quotes - Tcl, Tk, Expect
In Tcl, both Curley braces and double quotes can be used to hold a block of program or data together as a single unit / parameter ... but there are differences ... a) Curley braces can stretch over a number of lines, with new lines within the block being simply a part of the block. So they're idea ....

1468 - Lexical v Arithemetic testing, Bash and Perl
If you tell a story against someone, best to be telling it against yourself! One of our web servers (running standard, not our own software behind the scenes) has been having a problem with handling denial of service attacks which are coming in from time to time ... and I have a monitoring script r ....

1467 - stdout v stderr (Tcl, Perl, Shell)
When you're programming, you shouldn't write code to read directly from the keyboard and write to the screen .... what if you want to have your program read from or write to a file sometimes? Instead, you should write code to read from stdin (Tcl) or STDIN (Perl) and write to stdout (Tcl) or STDOU ....

1466 - Effective Java training - the bootcamp approach
Our public Java courses: Java Bootcamp- 4 days Java Programming for the Web - 5 days Deploying Java Apps under Linux / Unix - 5 days Apache httpd and Tomcat Deployment - 2 days Our courses are modular and we have further material - please ask about private courses if you have a group of delegates as ....

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