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Re: Drawing onto HDC allowed only X times?     

Author: Leo Davidson
Date: Jun 8, 2010 09:20

...simple 2d Game engine in Win32 C++. I use double buffering to draw the objects onto the client HDC. But I think I maybe drawing too many times to a HDC causing an error or something? I suspect your code is leaking GDI objects/handles ... some other kind of bug, but there's definitely no limit on the number of times you can draw to a device context (else almost every app in the...
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Drawing onto HDC allowed only X times?     

Author: Sascha
Date: Jun 8, 2010 04:11

... explaination I have come to believe that maybe I can only[/b] draw on a HDC so many times OR I can only copy to the window ... to the WindowHDC? My algorithm is simple: - The graphic engine has a draw queue that contains all the objects that need to be drawn in... the object from the queue. - After all objects have done their drawing I copy the BufferHDC to the main WindowHDC which has/shows ...
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drawing on an image in a GUI     

Author: Mathew Thomas
Date: Jun 8, 2010 00:03

... in a normal program, but for some reason, in the GUI, it only shows the pointer but does not draw when the imfreehand command is used. axes(handles.axes_detection); %%Axes where image is displayed imshow...'cross' is shown, but pressing and dragging the mouse does not yield any drawing on the image. Can't figure out what the issue is. Anyone has any ideas ?? Thanks in advance for any help...
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Re: Drawing blended drop shadows quickly     

Author: Robert
Date: May 14, 2010 10:38

... what the code at the link you have just posted is doing with the .png images, but presumably if it is drawing the shadow correctly (so that it is not just grey but will work on any ... will be using the .png image's alpha channel data when it performs the drawing, in which case the drawing itself is unlikely to be much faster than the equivalent GDI32 AlphaBlend function would be ...
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Using Acces To Paste Visio Drawing Into Power Point Issue     

Author: Gary
Date: May 13, 2010 18:48

... this using Access 2003, Power Point 2003, and Visio 2003 and power point slide has the ability to open the drawing as Visio by double clicking the drawing. Everything is sharp looking too...Access 2007, Power Point 2007, and Visio 2003, the power point slide has only an image of the drawing and it looks likes its out of focus too (not sharp looking). Any suggestions ??? Below is my VBA...
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Get dropped object before it gets dropped into a drawing ?     

Author: SomeNewDev
Date: Sep 22, 2008 16:34

Hi, is there any chance of getting an object, which was dropped into a drawing from an external application ? Because catching it with the ShapeAddedEventHandler seems to leave the CF_TEXT object only. Thanks in advance
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COMM: Drawing & Polymer Clay eBook Sale     

Author: Herbie
Date: Sep 21, 2008 21:08

Everyone says "I wish I knew how to draw." Well get started today! "Drawing" eBook $4.99 Until Sept 30th Order today to learn the skills and techniques necessary to have a strong foundation in drawing http://artist-how-to.com/DrawingeZine.htm _______ Polymer Clay eBook Kit - Buy ALL Five and Save! Special Price $25 During ...
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Re: [Haskell-cafe] Drawing an existing image into a cairo surface?     

Author: Rafal Kolanski
Date: Sep 21, 2008 21:07

..., I apologize. The best thing to do is to allocate either a pixmap or Gtk.DrawingArea -- you can then use widgetGetDrawable to get the drawing context from it and newGC to take drawing context and get a ...drawPixbuf to draw or update any image you want, then use the same DrawngArea for Cairo after you've drawing the image. If you need more help with it, let me know, and I can ...
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Re: [Haskell-cafe] Drawing an existing image into a cairo surface?     

Author: Jefferson Heard
Date: Sep 21, 2008 18:31

... have, I apologize. The best thing to do is to allocate either a pixmap or Gtk.DrawingArea -- you can then use widgetGetDrawable to get the drawing context from it and newGC to take drawing context and get a graphics ...drawPixbuf to draw or update any image you want, then use the same DrawngArea for Cairo after you've drawing the image. If you need more help with it, let me know, and I can ...
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Re: [Haskell-cafe] Drawing an existing image into a cairo surface?     

Author: Rafal Kolanski
Date: Sep 21, 2008 15:44

... Now the unsafe part (hack until I have an associative list storing my images to pull into relevant pages for rendering): unsafeLoadPNG file = unsafePerformIO $ imageSurfaceCreateFromPNG file This allows drawing an image directly in a Render () context: paintImage :: FilePath -> Double -> Double -> Render () paintImage file x y = do surf <- return $ unsafeLoadPNG file ...
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