【转帖】how to create the bitmap preview 9gsbitmapdevice0
 

how to create the bitmap preview (gsbitmapdevice)
how to create the bitmap preview (gsbitmapdevice)
i was under the impression that i had to override the gsbitmapdevice method as per the mfc example. i added its secondary method to return a pointer and things will not compile.
rather than "trying to get this to work" can you please give me specifics to be done to get it working? project settings, lib files, header files etc etc because i can't get my app to compile.
thank you.
andrew
you can implement it as:
code:
odgsdeviceptr myservices::gsbitmapdevice()
{
odgsdeviceptr pdevice;
pdevice.attach(new odrxobjectimpl<exgsbitmapdevice<exgsgdidevice> >);
}
you'll need to include exgsbitmapdevice.* and exgsgdidevice.* from examples/exrender/win into your project.
sergey slezkin
thank you sergey. i will give this a try later and get back to you.
andrew
quote:
originally posted by sergey slezkin
you can implement it as:
code:
odgsdeviceptr myservices::gsbitmapdevice()
{
odgsdeviceptr pdevice;
pdevice.attach(new odrxobjectimpl<exgsbitmapdevice<exgsgdidevice> >);
}
you'll need to include exgsbitmapdevice.* and exgsgdidevice.* from examples/exrender/win into your project.
i take it i need to return pdevice in the above method.....
andy
sorry, i forgot
return pdevice;
sergey slezkin
i added the files into the class and overrode the gsbitmapdevice method. i now get these compile errors:
linking...
vertcheck.obj : error lnk2001: unresolved external symbol "protected: virtual void __thiscall exgswin32device::createpalette(class odarray<unsigned long,class odmemoryallocator<unsigned long> > *)" (?createpalette@exgswin32device@@maexpav?$odarray@ k
v?$odmemoryallocator@k@@@@@z)
exgsgdidevice.obj : error lnk2001: unresolved external symbol "protected: virtual void __thiscall exgswin32device::createpalette(class odarray<unsigned long,class odmemoryallocator<unsigned long> > *)" (?createpalette@exgswin32device@@maexpav?$odarr
ay@kv?$odmemoryallocator@k@@@@@z)
vertcheck.obj : error lnk2001: unresolved external symbol "protected: virtual void __thiscall exgswin32device::deletecontext(void)" (?deletecontext@exgswin32device@@maexxz)
exgsgdidevice.obj : error lnk2001: unresolved external symbol "protected: virtual void __thiscall exgswin32device::deletecontext(void)" (?deletecontext@exgswin32device@@maexxz)
vertcheck.obj : error lnk2001: unresolved external symbol "public: virtual void __thiscall exgswin32device::generatepropmap(class odrxdictionary *)const " (?generatepropmap@exgswin32device@@ubexpavodrxdict ionary@@@z)
exgsgdidevice.obj : error lnk2001: unresolved external symbol "public: virtual void __thiscall exgswin32device::generatepropmap(class odrxdictionary *)const " (?generatepropmap@exgswin32device@@ubexpavodrxdict ionary@@@z)
vertcheck.obj : error lnk2001: unresolved external symbol "public: virtual class odrxdictionary * __thiscall exgswin32device:ropertiesinfo(void)const " (?propertiesinfo@exgswin32device@@ubepavodrxdictio nary@@xz)
exgsgdidevice.obj : error lnk2001: unresolved external symbol "public: virtual class odrxdictionary * __thiscall exgswin32device:ropertiesinfo(void)const " (?propertiesinfo@exgswin32device@@ubepavodrxdictio nary@@xz)
exgsgdidevice.obj : error lnk2001: unresolved external symbol "public: virtual int __thiscall exgswin32device::getdevicecolordepth(void)const " (?getdevicecolordepth@exgswin32device@@ubehxz)
exgsgdidevice.obj : error lnk2001: unresolved external symbol "public: virtual __thiscall exgswin32device::~exgswin32device(void)" (??1exgswin32device@@uae@xz)
exgsgdidevice.obj : error lnk2001: unresolved external symbol "public: __thiscall exgswin32device::exgswin32device(void)" (??0exgswin32device@@qae@xz)
debug/vertcheck.exe : fatal error lnk1120: 7 unresolved externals
error executing link.exe.
vertcheck.exe - 12 error(s), 0 warning(s)
i have resolved this issue. since the exgsgdidevice is inheritied from the exgswin32device class, i needed to include that in the application too. it now compiles and creates a bitmap preview.
fantastic...stuff...