Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Second, there is a noflicker option to Win32::GUI::Window->new, which for some reason defaults to 0.

I was curious, so I investigated.

When this option is off, window updates are performed as follows:

  • The part of the window that needs to be redrawn (or more) is redrawn.

When this option is on, window updates are performed as follows:

  • A canvas (Device Context) is created.
  • A bitmap is allocated for the canvas.
  • The bitmap is initialized to the background colour.
  • The whole window (and child windows) is painted onto this canvas.
  • The bitmap is copied over the window's bitmap.
  • The bitmap is deallocated.
  • The canvas is deallocated.

Think of it as buffering the output so that all the changes to the window's pixels occurs as close to instantly as possible.

The latter takes longer to update the window, uses more resources and is probably rarely needed.

In reply to Re^2: Refreshing text without flicker with AddLabel using Win32::GUI by ikegami
in thread Refreshing text without flicker with AddLabel using Win32::GUI by Popcorn Dave

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (5)
As of 2022-01-18 22:10 GMT
Find Nodes?
    Voting Booth?
    In 2022, my preferred method to securely store passwords is:

    Results (54 votes). Check out past polls.