How to DrawPoint ? about wxphp HOT 5 CLOSED

I think that should be wxPen, not wxBrush, and wxClientDC, however it doesn't make any difference.

<?php
$width = 180;
$height = 100;
$frame = new wxFrame(null, wxID_TOP, "Title", wxDefaultPosition, new wxSize($width, $height), ~wxCAPTION );
$panel = new wxPanel($frame, wxID_ANY, wxDefaultPosition, new wxSize($width, $height));
$chart = new wxClientDC($panel);
$chart->SetPen(new wxPen(new wxColour(255, 255, 255)));
$timer = new wxTimer();
$timer->Connect(wxEVT_TIMER, array(wxID_TOP, "refresh"));
$timer->Start(1000);
$frame->Show();
wxEntry();
function OnInit() {}
function OnExit() {}
//
function refresh()
{   global $chart, $height, $width ;
    for($row=0; $row<$height; $row++)
    {   for($col=0; $col<$width; $col++)
        {   $chart->DrawPoint($col, $row);
        }
    }
}
?>

from wxphp.

Here I modified your sample to make it work:

<?php
$width = 180;
$height = 100;

$frame = new wxFrame(null, wxID_TOP, "Title", wxDefaultPosition, new wxSize($width, $height), ~wxCAPTION );
$panel = new wxPanel($frame, wxID_ANY, wxDefaultPosition, new wxSize($width, $height));
$panel->Connect(wxEVT_PAINT, array(null, "paint"));
$frame->Maximize(false);
$frame->Show();

wxEntry();
function OnInit() {}
function OnExit() {}

function paint(wxPaintEvent $event)
{
    global $panel, $width, $height;

    $dc = new wxPaintDC($panel);

    $dc->SetPen(new wxPen(new wxColour(0xFF, 0, 0)));

    for($row=0; $row<$height; $row++)
    {   for($col=0; $col<$width; $col++)
        {   
            $dc->DrawPoint($col, $row);
        }
    }
}
?>

from wxphp.

by the way I just did 2 commits:

1. Add support for wxNonOwnedWindow::SetShape which allows to create free form windows.

2. Disabled error messages when OnInit and OnExit can't be called, so now this short code samples can skip the following bits:

   function OnInit() {}
   function OnExit() {}

from wxphp.

I didn't put the ctor in the event handler because some forum comment said it wouldn't get destroyed and by repeated calling eventually you would run out of memory, but maybe that was due to the specific OOP structure of that example.

What is the event that wxEVT_PAINT is trapping? wxWidgets says wxPanel's events are wxNavigationKeyEvent, so if you don't touch the keyboard or mouse I would have thought it wouldn't fire.

Anyway I want the wxTimer event to be the trigger for updating the chart (I didn't mention that before). It seems to work with wxPaintDC, even though its not now in a wxEVT_PAINT handler, but it also works with wxClientDC, as expected.

All working fine now, many thanks again.

from wxphp.

1. The $dc object is automatically destroyed when it goes out of scope so don't worry about that one.
2. The wxEVT_PAINT is triggered everytime that the panel needs to be rendered. Examples: when drawing the element for the first time, when moving the window around, if the panel gets behind some element and then on the front again, if the element gets resized, etc...
3. You can add a wxTimer that calls $frame->Refresh() or $panel->Refresh(), and that would force a paint event even if not required.

from wxphp.