BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  HELP: Loading bitmaps from a res file within component          BorlandTalk.com Forum Index -> C++ Builder (VCL Components Development) View previous topic :: View next topic   Author Message Josh Guest Posted: Tue Jan 09, 2007 9:15 pm    Post subject: HELP: Loading bitmaps from a res file within component I have a few new components that require bitmaps to be displayed in TImage controls within my component. The component works fine when I load the files from their path names but when I try to load from a resource file it can never find them either by name or ID. Here is some code on how I'm doing this. #include <vcl.h> #pragma hdrstop #include "TLED.h" #pragma resource "LED.res" #pragma package(smart_init) __fastcall TLED::TLED(TComponent* Owner) : TImage(Owner) { this->Width = 16; this->Height = 16; this->Transparent = true; this->Picture->Bitmap->LoadFromResourceName((int) HInstance,"LED_DARK"); } void TLED::SetGreen() { this->Picture->Bitmap->LoadFromResourceName((int)HInstance,"LED_GREEN"); } I am unsure where the component actually looks for the resources. Is it in the package resource file, application resource file where the component is dropped on a form, a separate resource for the control? I know I'm missing something simple here. Thanks in advance, Josh Back to top Remy Lebeau (TeamB) Guest Posted: Wed Jan 10, 2007 2:08 am    Post subject: Re: Loading bitmaps from a res file within component "Josh" <jarnold (AT) atterotech (DOT) com> wrote in message news:45a3b15d (AT) newsgroups (DOT) borland.com... Quote: when I try to load from a resource file it can never find them either by name or ID. That is because you are trying to load them from the wrong place. For a component to load an image from its own resources, you need to use the FindClassHInstance() function instead of the global HInstance variable, ie: this->Picture->Bitmap->LoadFromResourceName(FindClassHInstance(__class id(TLED)), "LED_DARK"); this->Picture->Bitmap->LoadFromResourceName(FindClassHInstance(__class id(TLED)), "LED_GREEN"); Gambit Back to top Josh Guest Posted: Wed Jan 10, 2007 3:28 am    Post subject: Re: Loading bitmaps from a res file within component Remy, Thanks for the suggestion however, using FindClassHInstance did not solve my problem. I still get an EResNotFound exception. One thing I didn't mention and am unsure of the effect. I need to build without dynamic RTL and without runtime packages. How does this affect where I get my resources for the component I'm trying to use? Thanks, Josh "Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> wrote in message news:45a3f5fd$1 (AT) newsgroups (DOT) borland.com... Quote: "Josh" <jarnold (AT) atterotech (DOT) com> wrote in message news:45a3b15d (AT) newsgroups (DOT) borland.com... when I try to load from a resource file it can never find them either by name or ID. That is because you are trying to load them from the wrong place. For a component to load an image from its own resources, you need to use the FindClassHInstance() function instead of the global HInstance variable, ie: this->Picture->Bitmap->LoadFromResourceName(FindClassHInstance(__class id(TLED)), "LED_DARK"); this->Picture->Bitmap->LoadFromResourceName(FindClassHInstance(__class id(TLED)), "LED_GREEN"); Gambit Back to top Remy Lebeau (TeamB) Guest Posted: Wed Jan 10, 2007 11:46 am    Post subject: Re: Loading bitmaps from a res file within component "Josh" <jarnold (AT) atterotech (DOT) com> wrote in message news:45a408c2$1 (AT) newsgroups (DOT) borland.com... Quote: Thanks for the suggestion however, using FindClassHInstance did not solve my problem. I still get an EResNotFound exception. Then your images are likely not part of the component package's resources to begin with. How exactly are you adding them to your project? FindClassHInstance() is the proper way to locate an image that belongs to a package. 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