Tcl Tk Png Support

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Tcl/Tk 8.6

    https://www.tcl.tk/software/tcltk/8.6.html
    Highlights of Tk 8.6. Built-in PNG Image Support: Photo images now support read/write in the PNG format, with the ability to set the alpha channel. Busy Windows: New command tk busy is a variant of blt::busy that lets the interactivity of windows be suspended and …

TIP 244: PNG Photo Image Support for Tk - Tcl

    https://core.tcl-lang.org/tips/doc/trunk/tip/244.md
    However, to date there is no photo format in the core that exposes this functionality. This TIP proposes adding support for the PNG (Portable Network Graphics) format. Rationale. There is a current push for "beautifying" Tcl/Tk with more modern appearing widgets and default configuration options.

tcl - R tcltk: error when trying to display a png file ...

    https://stackoverflow.com/questions/39948090/r-tcltk-error-when-trying-to-display-a-png-file-depending-on-the-os
    R comes along with Tcl 8.5, even with the latest version 3.3.2, which means that there is no way for embedding a PNG file with the usual command into a window created thanks to Tcl/Tk. For some reasons it is working on Mac OS, but do not expect this to work easily on other OSs.

About Tcl/Tk

    https://tcl.tk/about/
    What makes Tcl/Tk so compelling? Rapid development, truly cross-platform GUI's, flexible integration, elegant networking model, great I18N and concurrency support — all that and it's easy to learn and easy to deploy! ... see Features and Benefits. BONUS: Some cool things most people don't know about Tcl/Tk (but they should!)... see Highlights.

Tcl Developer Site

    https://www.tcl.tk/
    The vibrant Tcl user community provides a variety of support resources to help working with Tcl/Tk. Among others, the Tcler's Wiki provides a constantly updated set of tips and tricks, while comp.lang.tcl remains the best forum for Tcl/Tk discussions. Beyond that …

Tk (software) - Wikipedia

    https://en.wikipedia.org/wiki/Tk_(software)
    Tk (software) Language Watch Edit Tk is a free ... Highlights of version 8.6 include PNG support and angled text. History. Tk was developed by John Ousterhout as an extension for the Tcl scripting language. It was first publicly ... Platform-independent: Like Tcl, Tk is interpreted. It has been ported to multiple platforms and can easily run on ...License: BSD-style

Tcl/Tk – Freecode

    http://freshmeat.sourceforge.net/projects/tcltk
    Release Notes: This implementation enables collection of new commands (coroutine, tailcall, yield, and yieldto) that provide profound new capabilities and models of concurrency to Tcl scripts. Highlights of Tk, built-in PNG image support: photo images now support read/write in the PNG format, with the ability to set the alpha channel.

Tk Built-In Commands - canvas manual page - tcl.tk

    https://www.tcl.tk/man/tcl8.4/TkCmd/canvas.htm
    This means that items in a canvas can have behaviors defined by the Tcl scripts bound to them. DISPLAY LIST ... Canvases do not support scaling or rotation of the canvas coordinate system relative to the window coordinate system. ... Tk's canvas widget is …

FreshPorts -- graphics/tkpng: PNG support for Tcl/Tk

    https://www.freshports.org/graphics/tkpng/
    Although other extensions such as Img also add support for PNG images, I wanted something that was lightweight, did not depend on libpng, and which would be suitable for inclusion in the Tk core, as Tk does not currently support any image formats natively that take advantage of its internal support for alpha blending, and alpha antialiasing and ...

Support and More - Tcl

    http://www.tcl.tk/about/support.html
    Can I get support? Training? ActiveState is one of several companies that provide commercial support for Tcl and Tk. They also provide training, as do Noumena and others. Be sure to check the community pages for a wide variety of support resources available in the community. How long has it been around?



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