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Up to now you have looked at size policies and used horizontal and vertical layouts. From Designer you can attain the three most common layouts: horizontal, vertical, and grid. The box layouts (which you have seen several times) are available through the classes QHBoxLayout (horizontal) and QVBoxLayout (vertical). They simply put the widgets in a row or column from left to right or from top-down. Figures 3-6 and 3-7 show both classes in action. In the examples, the widgets were added in this order: foo, bar, baz. When used in combination with stretch factors and size policies, they can be used as a basis for many different dialog layouts.

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QR Code Reader is the fastest and most user-friendly QR code scanner available . If your Java or Symbian phone came with a built-in scanner , this would be it.

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javascript API for generating QR codes - Stack Overflow
Google has a QR code generator as part of their Chart Tools that you can use here.

Now that you ve seen how error documents are generated by default, let s look at how you can customize them to change the theme for the SimpleSite application The easiest way to do this is to simply replace error_document_template with a different string containing the HTML you want returned The string can contain the variables %(prefix)s, %(code)s, and %(message)s, which get substituted for the URL path where the application is mounted, the HTTP status code that was intercepted, and the default Pylons description of the HTTP status, respectively Although this approach works perfectly well, for the SimpleSite application you ll go one step further and use a custom template to generate the error documents To do this, you need to modify the document() action Update it to look like this: def document(self): """Render the error document""" resp = requestenvironget('pylonsoriginal_response') code = cgiescape(requestGET.

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Java QR Code Generator - zxing example - JournalDev
Today we will look into java QR code generator program. If you are tech and gadget savvy, then you must be aware of the QR code. You will find it everywhere ...

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3 Apr 2018 ... Learn about the new, free QR code reader and library that improve ... libraries to their application then read the QR Codes using a camera.

get('code', '')) content = cgiescape(requestGETget('message', '')) if resp: content = literal(respstatus) code = code or cgiescape(str(respstatus_int)) if not code: raise Exception('No status code was found') ccode = code cmessage = content return render('/derived/error/documenthtml') The start of the action remains the same, but the lines in bold pass the code and message to a template rather than generating a response based on a string Notice that you ve also changed respbody to respstatus because respbody contains some HTML markup you don t need For the previous code to work, you need to add imports for the c global and Mako render() function at the top of the file: from pylons import tmpl_context as c from simplesitelibbase import render Create the new derived/error/documenthtml template with the following content: <%inherit file="/base/indexhtml"/> <%def name="title()">Server Error ${c.

If you need to, you can alter the direction in which widgets are added by using the setDirection Tip

Note that in addition to the session-id specified in the cookie, a secure attribute is used to specify that the client should only send the cookie back to the server over an SSL connection In the preceding example, when the user clicks the submit button, the browser sends the following HTTP request to the server: GET /submit_order pay=yes HTTP/10 Cookie: session-id=3927a837e947df203784d309c8372b8e The algorithm that the server uses to process the order is still more or less the same, except that the value of the session-id variable is retrieved from the cookie instead of the URL parameters In general, using a cookie is different from using hidden form fields because a wellbehaved browser will typically send the cookie back to the web server on each HTTP request, without requiring a form submission or tacking on additional parameters to the URL.

code}</%def> <%def name="heading()"><h1>Error ${ccode}</h1></%def> <p>${cmessage}</p> With the changes in place, you can test the template by visiting a page that doesn t exist such as http://localhost:5000/no/such/page The result is shown in Figure 19-4..

method. This means that you can add widgets from right to left to a horizontal layout or upwards to a vertical layout.

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Java QR Code Generator - zxing example - JournalDev
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