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This project provides safe and easy to use API bindings to Tcl/Tk commands.

Features

Friendly API for both Rustaceans and Tk programers.

Quickstart

A quick glance

use tk::*;
use tk::cmd::*;

fn main() -> TkResult<()> {
    let tk = make_tk!()?;
    let root = tk.root();
    root.add_label( -text("constructs widgets and layout step by step") )?
        .pack(())?;
    let f = root
        .add_frame(())?
        .pack(())?;
    let _btn = f
        .add_button( "btn" -text("quit") -command("destroy .") )?
        .pack(())?;
    Ok( main_loop() )
}

Another glance

use tk::*;
use tk::cmd::*;

fn main() -> TkResult<()> {
    let tk = make_tk!()?;
    tk.root().add_widgets(
        -pack( -label( -text("constructs widgets and layout in one expression") ))
        -pack( -frame( -pack( -button( "btn" -text("quit") -command("destroy .") ))))
    )?;
    Ok( main_loop() )
}

The naming conventions in translating Tk commands to Rust bindings

Prefix Tk widget constructors with add_ and put parentheses around option values.

The Tk command to add a widget looks like Constructor path -options_and_values, e.g.
```
label .lb -text "lorem ipsum" -width 50 -height 20
```
The equivalent Rust statement is as follows.
```
let lb = root.add_label( /*".lb"*/ -text("lorem ipsum") -width(50) -height(20) )?;
```
Converts Tcl's imperative style to Rust's object style

The Tk command is in the form of "verb noun options", e.g.
```
pack .lb -fill both
```
The equivalent Rust statement is in th form of "object method options", as follows.
```
lb.pack( -fill("both") )?; // use pack(()) without any option.
```
Converts Tk's space-separated commands to Rust's underscore-separated function names.

Tk commands are space-separated, e.g.
```
tk fontchooser show
```
The equivalent Rust statement is as follows.
```
tk.fontchooser_show()?;
```
Users can look into the Tk command reference and find the "fontchooser" page then search "show".
Distinguish between set and get via the set_ prefix.

In Tk, it is common to distinguish set and get by providing or omitting the value argument, e.g.

wm title window "Lorem ipsum" means to set the window's title to "Lorem ipsum", while wm title window means to get the windows' title.

The equivalent Rust statements are as follows.
```
window.set_wm_title( "Lorem ipsum" )?;
window.wm_title()?;
```

Documents

License

Under Apache License 2.0 or MIT License, at your will.