search for: evt_paint

...class MyApp < Wx::App def on_init #Containing frame. frame = Wx::Frame.new(nil, :size => [300, 300]) frame.show #Offscreen drawing buffer. buffer = Wx::Bitmap.new(300, 300) #Displays drawing. window = Wx::Window.new(frame, :size => [300, 300]) window.evt_paint do |event| window.paint do |dc| #Copy the buffer to the viewable window. buffer.draw do |buffer_dc| dc.blit(0, 0, 300, 300, buffer_dc, 0, 0) end end end #Animate. (1..40).each do |i| #Clear screen. buffer.draw do |surface|...

When implementing EVT_PAINT handlers in c++ the PaintDC object is constructed at the beginning of the function, and auto destructed at it''s end, which informs wxwidgets that "invalid regions in the window have been repainted". Under ruby, this is not the case and causes a stream of EVT_PAINT events to be...

I use dc = DC.new() dc.draw_line(50, 50, 100, 100) but it can''t be compiled I don''t know how to declare DC variable?? in http://wxruby.rubyforge.org/doc/dc.html it don''t tell me how to declare now variable plese tell me :''( -- Posted via http://www.ruby-forum.com/.

...t;>@@ -21,4 +21,18 @@ </span><span class="cx"> def find_window_by_label(a_label) </span><span class="cx"> Wx:Window.find_window_by_label(a_label, self) </span><span class="cx"> end </span><ins>+ + alias :__old_evt_paint :evt_paint + # This modified version of evt_paint sets a variable indicating that a + # paint event is being handled just before running the event + # handler. This ensures that any call to Window#paint within the + # handler will supply a Wx::PaintDC (see swig/Window.i). + def evt_paint(&...

...st be constructed if an application wishes to paint on the -client area of a window from outside an *OnPaint* event. -This should normally be constructed as a temporary stack object; don''t store -a ClientDC object. </del><ins>+This class is used to draw upon Windows outside of @evt_paint@ +handlers. It is not instantiated directly; rather, call the +"paint":window.html#Window_paint method of the Window you wish to draw +upon, and pass a block which will receive a ClientDC object. </ins><span class="cx"> </span><del>-To draw on a window f...

...down {|event| on_left_button_event_down(event)} </span><span class="cx"> evt_left_up {|event| on_left_button_event_up(event)} </span><span class="cx"> evt_motion {|event| on_left_button_event_motion(event)} </span><del>- evt_paint {|event| on_paint(event)} </del><ins>+ evt_paint { on_paint } </ins><span class="cx"> #evt_mousewheel {|event| on_wheel(event)} </span><span class="cx"> end </span><span class="cx"> </span>&l...

...ON_RESIZE) </span><del>- text = Wx::StaticText.new(self, -1, - ''WxRuby common dialog test application'', - Wx::Point.new(10, 10) ) - # PaintDC currently causing ObjectPreviouslyDeleted (10 Aug 2006) - # evt_paint() {|event| onPaint(event) } </del><ins>+ evt_paint { |event| on_paint(event) } </ins><span class="cx"> end </span><span class="cx"> </span><span class="cx"> def clear </span><span class="cx">...

Hello, I would like to get a window handle from another app outside of wxRuby and convert it into a wxRuby Window handle so that I can use it as the parent Window for several wxRuby child windows. Basically I want to use the FRAME_FLOAT_ON_PARENT window style so that my wxRuby windows become associated with the outside app kind of like toolbars, e.g., they don''t show up in the

Need some assistance with animation again... When I run the drawing code in a separate thread, it''s slow as heck. I think it may be because the drawing thread isn''t getting enough time from the thread scheduler. I was able to reproduce the problem in my little sample program simply by increasing the number of lines it draws per update. I''m lucky to get one frame

...o ################# require ''wxruby'' class MyFrame < Wx::Frame def initialize(title) super(nil, -1, title,Wx::DEFAULT_POSITION, Wx::Size.new(250,250)) image = Wx::Image.new("sk.png") @bitmap = Wx::Bitmap.new(image) @left_dn = false evt_paint { on_paint } evt_motion {|event| on_motion(event) } evt_left_down {|event| @left_dn = true } evt_left_up {|event| @left_dn = false } end def move_region(nx,ny) ox,oy,w,h = @reg.get_box @reg.clear @reg = Wx::Region.new(nx,ny,nx+w,ny+h) dc = Wx...

...Wx::App def on_init #Containing frame. frame = Wx::Frame.new(nil, :size => [300, 300]) frame.show #Offscreen drawing buffer. buffer = Wx::Bitmap.new(300, 300) #Displays drawing. window = Wx::Window.new(frame, :size => [300, 300]) window.evt_paint do |event| update_window(window, buffer) end #Initialize drawing loop counter. @i = 0 #Animate periodically. timer_id = Wx::ID_HIGHEST + 1 t = Wx::Timer.new(self, timer_id) evt_timer(timer_id) do animate(window, buffer) #No effect....

...22&group_id=35 Category: Incorrect behavior Group: current Status: Open Resolution: None Priority: 3 Submitted By: Nobody (None) Assigned to: Nobody (None) Summary: Multiple warnings, especially @__painting__ Initial Comment: Hi, I''m drawing with "paint" outside the normal evt_paint with the following code (just as example) in a subclass of Wx::Panel: paint do |dc| dc.draw_circle( ... ) end With this I get multiple "warning: instance variable @__painting__ not initialized" warnings for each paint call. Because they are displayed on every draw event, developing w...

...t in a scrolled window myself but it occurs in all painting events I believe. I''m using the wxRuby2 preview release (0.0.38). I''m mostly using wxRuby on a Mac and Windows and the problem has only occurred on Windows. Essentially once you send a refresh command to a control with a evt_paint handler it seems to go into a loop whereby the control is constantly told to repaint itself. This generally causes a quick crash due to the garbage collection problems on Windows but if you disable the garbage collection you get the issue I describe. I''ve attached some sample code that il...

I just use wxRuby and I have problem I use background image on my app and when I create label it seem look background of label is gray, how can I change it into transparent???? -- Posted via http://www.ruby-forum.com/.

...raise end end class MyApp < Wx::App def on_init #Create the top window. frame = Wx::Frame.new(nil, :size => [300, 300]) #Create a panel within it. view = Wx::Window.new(frame) buffer = Wx::Bitmap.new(300, 300) @x = 0 #Set up a handler for paint events. view.evt_paint do |event| #Wx::Window#paint takes a block. #This will later be called with a device context to paint on. view.paint do |dc| buffer.draw do |buffer_dc| buffer_dc.clear buffer_dc.pen = Wx::Pen.new(Wx::Colour.new(128, 128, 128), 5) buffer_dc.draw_line(@x, 0, @x + 100, 100)...

I was trying out the RMagick sample from the wiki and ran into an interesting(?) problem: If you resized the window it got stuck in an endless loop calling onPaint. After a bit, if you had the mouse in the window it would crash. Anyone seen this behavior before? I wonder if this is related to other crashes we''ve seen? Roy

Anyone know how to draw in wxRuby? I want to draw a graph, and have it update as new data comes in. I see stuff about Device Contexts, but I can''t find anything about how to use them, associate them with a panel, or anything like that. -Kurt

...orgotten all about it. There may be other features that we manually added to wxRuby that I will need to be reminded about so I can add them to the new codes base as well. This new release of wxruby-swig adds the same Window#paint method, which required me to implement DC, WindowDC, PaintDC, and evt_paint. Continuing the pattern, I had some obstacles, but was able to find solutions for all of them. The wxWidgets reference docs, which I am using to build all the class definitions, do not specify whether a method is "pure virtual" or not. SWIG requires this information to behave correct...

...//hu.php.net --+ -------------- next part -------------- #!/usr/bin/ruby require ''wxruby'' include Wx class MyImageFrame < Dialog def initialize parent, title, bmap super(parent, -1, title) @bitmap=bmap set_client_size_wh(@bitmap.get_width,@bitmap.get_height) evt_paint {|what| on_paint(what)} evt_left_down {on_click()} end def on_click close end def on_paint what dc = PaintDC.new(self) dc.draw_bitmap(@bitmap,0,0,true) end end class MyFrame < Wx::Frame def initialize(title) super(nil, -1, title) b=Button.new(self,-1,'&...

I''m trying to capture character events on a frame, using the following piece of code (adapted from samples/etc/test.rb): def initialize(title) super(nil, -1, title, Wx::Point.new(-1,-1), Wx::Size.new(530,590), Wx::DEFAULT_FRAME_STYLE | Wx::FRAME_SHAPED) evt_paint { onPaint } evt_char { | evt | puts "Got char evt: "+evt.to_s if evt.get_key_code.chr =~ /\s/ next_image end } @bitmap = nil @file = nil end (I''ve added the constant for Wx::FRAME_SHAPED to try and allow resizing programtically. Doesn'&...