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.NET Forum / .NET Framework / Compact Framework / May 2005How to stop jumpy drawing...
Is there a way to not show anything until everything is drawn? I thought I read somewhere on here how to do this...I just can't remember what to search for or else I would... We'll need a bit more info. What's the context? If you're drawing into a Graphics object, then draw to an offscreen buffer, then blit the result to the screen when you're done (commonly called double buffering).  SignatureChris Tacke Co-founder OpenNETCF.org Has OpenNETCF helped you? Consider donating to support us! http://www.opennetcf.org/donate > Is there a way to not show anything until everything is drawn? > > I thought I read somewhere on here how to do this...I just can't remember > what to search for or else I would... I've created a square object for a calendar...When building the calendar I draw all these squares on the screen...They are drawn one by one instead of all at once, I just didn't know if there was a screen suspend or something untill I'm ready to show it... I will search for double buffering... Thanks > We'll need a bit more info. What's the context? If you're drawing into a > Graphics object, then draw to an offscreen buffer, then blit the result to [quoted text clipped - 4 lines] >> I thought I read somewhere on here how to do this...I just can't remember >> what to search for or else I would... In short - 1) create a bitmap size of your control 2) In your Paint event handler draw everyithing you need on the Graphics object created from that bitmap (Graphics.FromImage). This Graphics object needs to be created once and stored. You can optimize the drawing by painting only those elements that intersect with e.ClipRect 3) when done, do this: SignatureAlex Feinman --- Visit http://www.opennetcf.org > I've created a square object for a calendar...When building the calendar I > draw all these squares on the screen...They are drawn one by one instead [quoted text clipped - 13 lines] >>> I thought I read somewhere on here how to do this...I just can't >>> remember what to search for or else I would... Sorry, sent too early. In short - 1) create a bitmap size of your control (m_bmOff) 2) In your OnPaint override draw everyithing you need on the Graphics object created from that bitmap (Graphics.FromImage). This Graphics object needs to be created once and stored. You can optimize the drawing by painting only those elements that intersect with e.ClipRectangle 3) when done, do this: e.Graphics.DrawImage(m_bmOff, e.ClipRectangle, e.ClipRectangle, GraphicsUnit.Pixel); SignatureAlex Feinman --- Visit http://www.opennetcf.org > I've created a square object for a calendar...When building the calendar I > draw all these squares on the screen...They are drawn one by one instead [quoted text clipped - 13 lines] >>> I thought I read somewhere on here how to do this...I just can't >>> remember what to search for or else I would... Look for double buffering, if I understand your question, that is what you want to achieve > Is there a way to not show anything until everything is drawn? > > I thought I read somewhere on here how to do this...I just can't remember > what to search for or else I would... will search for it thanks > Look for double buffering, if I understand your question, that is what you > want to achieve [quoted text clipped - 3 lines] >> I thought I read somewhere on here how to do this...I just can't remember >> what to search for or else I would... Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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