BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  how I can access TCanvas->Pixels quickly          BorlandTalk.com Forum Index -> C++ Builder (Graphics) View previous topic :: View next topic   Author Message Cenk Cihan Guest Posted: Sat Nov 26, 2005 11:18 am    Post subject: how I can access TCanvas->Pixels quickly Hi. I am write a floodfill function with row coherence algorithm. This function fill Tcanvas. But it is slowly.. I use TCanvas->Pixels for Get/Set pixels. How I can access pixels quickly. Back to top Simon D Guest Posted: Sat Nov 26, 2005 11:49 am    Post subject: Re: how I can access TCanvas->Pixels quickly "Cenk Cihan" <cecihan (AT) superonline (DOT) com> wrote Quote: Hi. I am write a floodfill function with row coherence algorithm. This function fill Tcanvas. But it is slowly.. I use TCanvas->Pixels for Get/Set pixels. How I can access pixels quickly. Use ScanLine Simon. Back to top Michel Leunen Guest Posted: Sat Nov 26, 2005 4:21 pm    Post subject: Re: how I can access TCanvas->Pixels quickly Simon D wrote: Quote: "Cenk Cihan" <cecihan (AT) superonline (DOT) com> wrote in message news:4388446d (AT) newsgroups (DOT) borland.com... Hi. I am write a floodfill function with row coherence algorithm. This function fill Tcanvas. But it is slowly.. I use TCanvas->Pixels for Get/Set pixels. How I can access pixels quickly. Use ScanLine Or create an in-memory bitmap and access its pixels using GetDIBits() and SetDIBits(). AFAIK, its the fastest way. Michel -- ---------------------------------------- Michel Leunen mailto: see my homepage. C++Builder, BCC5.5.1 Web site: http://www.leunen.com/ ---------------------------------------- Back to top Darren Dwyer Guest Posted: Sun Nov 27, 2005 7:24 pm    Post subject: Re: how I can access TCanvas->Pixels quickly you can get optimum speed using DirectX. visit http://bcb-tools.com - darren dwyer "Michel Leunen" <nospam (AT) noreply (DOT) please> wrote Quote: Simon D wrote: "Cenk Cihan" <cecihan (AT) superonline (DOT) com> wrote in message news:4388446d (AT) newsgroups (DOT) borland.com... Hi. I am write a floodfill function with row coherence algorithm. This function fill Tcanvas. But it is slowly.. I use TCanvas->Pixels for Get/Set pixels. How I can access pixels quickly. Use ScanLine Or create an in-memory bitmap and access its pixels using GetDIBits() and SetDIBits(). AFAIK, its the fastest way. Michel -- ---------------------------------------- Michel Leunen mailto: see my homepage. C++Builder, BCC5.5.1 Web site: http://www.leunen.com/ ---------------------------------------- Back to top Darren Dwyer Guest Posted: Sun Nov 27, 2005 7:27 pm    Post subject: Re: how I can access TCanvas->Pixels quickly In particular, take a look at the TDx_Draw_Library Example C Demo - Pixels and Custom Paint Routines - darren "Darren Dwyer" <darrend (AT) bcb-tools (DOT) com> wrote Quote: you can get optimum speed using DirectX. visit http://bcb-tools.com - darren dwyer "Michel Leunen" <nospam (AT) noreply (DOT) please> wrote in message news:43888b51 (AT) newsgroups (DOT) borland.com... Simon D wrote: "Cenk Cihan" <cecihan (AT) superonline (DOT) com> wrote in message news:4388446d (AT) newsgroups (DOT) borland.com... Hi. I am write a floodfill function with row coherence algorithm. This function fill Tcanvas. But it is slowly.. I use TCanvas->Pixels for Get/Set pixels. How I can access pixels quickly. Use ScanLine Or create an in-memory bitmap and access its pixels using GetDIBits() and SetDIBits(). AFAIK, its the fastest way. Michel -- ---------------------------------------- Michel Leunen mailto: see my homepage. 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