[moved] why i can not load DLL on Nokia N73

[sean_bean]

hello , everyone,

i had developed a DLL, and i try to use it in my application. i failed to load it on Nokia N73, but i can load on Emulator, does anybody know why? please help me , i am really suffer from it.

the following is some related code :
-----------------------------
............

RLibrary library;

TInt n;
n=library.Load( _L("trustmobiregister.dll"), _L("C:\\Data\\") );
if(n != KErrNone)
{
User::Exit( 40 );
}

.................

the "trustmobiregister.dll" file was exist in the path "C:\\Data\\" on N73

[laa-laa]

N73 is an S60 3rd Edition device. Platform Security was taken into use in 3rd edition, and platsec prevents loading binaries from other locations than \sys\bin.

Lauri

[sean_bean]

thanks very much for your help , laa-laa

i have take a try as your propose, but i am still failed to load the DLL, is there any other reasons? can you do me another favor?

the following is the related code::


1 some related call code：
-----------------
RLibrary library;
TInt n;
n=library.Load( _L("trustmobiregister.dll"), _L("\\sys\\bin") );
//n=library.Load( _L("trustmobiregister.dll"), _L("!:\\sys\\bin") );
//n=library.Load( _L("trustmobiregister.dll"));
if(n != KErrNone)
{
User::Exit( 40 );
}

.................

2 some lines in .pkg file
---------------------
........
"C:\Symbian\9.1\S60_3rd_MR_3\Epoc32\release\GCCE\UREL\app.exe" -"!:\sys\bin\ app.exe"
"C:\Symbian\9.1\S60_3rd_MR_3\Epoc32\release\GCCE\UREL\trustmobiregister.dll" -"!:\sys\bin\trustmobiregister.dll"

.......



best regards

[laa-laa]

What is the error code you're getting?

Platsec also introduced the notion of capabilities. One reason for DLL loading failure can be that the loading exe has some capabilities that the DLL binary does not have.

And, is there a reason for using runtime linking to the DLL (through RLibrary) and not compile-time linking (through LIBRARY keyword in MMP file)?

Lauri