Wt

Yes, see examples/javascript for a simple example.

You can use:

• WApplication::require() to load a JS file containing the functions that process data
• JSignal to call C code from JavaScript (use createCall or trigger using Wt.emit())
• Use a JSlot to execute JavaScript when an event triggers it. You can trigger a JSlot by connecting it to a signal, but you can also trigger it from C by calling its exec method.
• As alternative to JSlot, use EventSignal::connect() to execute JS when an event happens (e.g. WPushButton::clicked().connect(function(object, event) { alert('hello!');}\")
• WWebWidget::doJavaScript() and WApplication::doJavaScript() allow you to execute JS from C

Some of this is demonstrated in examples/javascript.

Wim.

i think my question is not complete that you have misunderstood.

my requirement is this

i ask user to select a file location on his system

without uploading to server i need to run a command on his system based on the file location he choose and send the result back to my wt application or store the result is server

Browsers generally don't allow this, because it is a security risk.

There are a couple of workarounds:

• JavaScript has a new API, that allows you to load the data from a local file and process it in JavaScript.
• Use a trusted Java applet, so that you can access the file
• I believe ActiveX can also do this, but that is an IE on Windows only solution.

W.

JavaScript has a new API, that allows you to load the data from a local file and process it in JavaScript.

Please tell me more about new JS API

Use a trusted Java applet, so that you can access the file

dont like to use a java applet

I believe ActiveX can also do this, but that is an IE on Windows only solution.

windows only solution is not suitable for me

ask google: http://www.google.be/search?q=javascript%20file%20api