Hi,
> if (!opdlgMain->Execute()) exit; //PictureOpenDialog
You are doing somehow like
if (..condition...) exit;
But 'exit' is not a keyword on C++. Moreover, 'exit' is a
function defined in stdlib, and this equals to an expression
containing function adress, and thus, ignored.
I guess you mean
if (!opdlgMain->Execute()) return;
Or something similar.
Probably the memory corruption comes from opdlgMain->FileName
being NULL.
Besides, with BCB you need not the DLL. The library does contain
all needed to link statically.
Regards,
Mart� Maria
The little cms project
http://www.littlecms.com
[EMAIL PROTECTED]
----- Original Message -----
From: "Auke Nauta" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, August 01, 2002 4:49 PM
Subject: [Lcms-user] BCB6 and LCMS.DLL?
> Hi,
>
> I'm an inexperienced C++ programmer with some background in CM / Digital
> Imaging..
> Unfortunately, I'm having a problem getting Little cms to work properly
> using Cbuilder 6.0.
>
> This is what I did to 'enable LCMS' on my system (please tell me if I
> screwed up!):
>
> I opened the project group LCMS109.BPG from the BCB4 folder and did a Build
> All.
> I used the resulting lcmsdll.dll and lcms109.lib in my own project (I added
> the lcms109.lib to my project and put the lcmsdll.dll file in my project
> directory).
> Furthermore (of course) I included lcms.h in my header file.
>
> In principle I could now use the functionality of lcms in my own program.
>
> BUT, a nasty error crept in, just have a look at my code:
>
> {
> /* 1: open image */
> Graphics::TBitmap *mybitmap=new Graphics::TBitmap();
> Graphics::TBitmap *newbitmap=new Graphics::TBitmap();
>
> if (!opdlgMain->Execute()) exit; //PictureOpenDialog
> mybitmap->LoadFromFile(opdlgMain->FileName); //bmp file in this example
> newbitmap->Assign(mybitmap);
>
> /* 2: profile stuff related to lcms */
> cmsHPROFILE hInProfile, hOutProfile;
> cmsHTRANSFORM hTransform;
>
> hInProfile = cmsOpenProfileFromFile("Dimage 7i CWB c4b1.icm", "r");
> //ERROR OCCURS HERE!!!
> hOutProfile = cmsOpenProfileFromFile("sRGB Color Space Profile.icm", "r");
> hTransform =
> cmsCreateTransform(hInProfile,TYPE_BGR_8,hOutProfile,TYPE_BGR_8,
> INTENT_RELATIVE_COLORIMETRIC, 0);
>
> /* 3: actual colour transform */
> for (int y=0;y<mybitmap->Height;y++) {
> unsigned char* ptr=(unsigned char*)mybitmap->ScanLine[y];
> unsigned char* nwptr=(unsigned char*)newbitmap->ScanLine[y];
> cmsDoTransform(hTransform, ptr,nwptr,mybitmap->Width);
> }
>
> /* 4: cleanup */
> cmsCloseProfile(hInProfile);
> cmsCloseProfile(hOutProfile);
> cmsDeleteTransform(hTransform);
>
> delete mybitmap;
> delete newbitmap;
> }
>
> When this code is executed an error message occurs at 2: hInProfile =
> cmsOpenProfileFromFile...
> 'Access violation at address xxxxxxxx in module cc3260mt.dll'
>
> So there seems to be some memory conflict here.
>
> --> Now, when the code is shuffled, that is part 1 (open image) is swapped
> with part 2 (profile stuff) the code executes fine -once-.
> When I want to execute the code the 2nd time, the same error message happens
> at the same point.
>
> And now the weirdest part:
> When the pictureopendialog ( if (!opdlgMain->Execute()) exit; ) is replaced
> by:
> opdlgMain->FileName="my filename.bmp";
> the code runs flawlessly, any number of times.
>
> So there actually seems to be a conflict involving lcms and
> pictureopendialog. When the opendialog is skipped, the problems are gone.
>
>
>
> Please could anyone shed some light on this matter?
>
> Thanks and have a nice day,
>
> Auke Nauta
>
>
>
>
>
>
>
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>
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