Loading style from resource on Mac OS X

Question

Using Firemonkey (FMX) in C++ Builder XE6, I am attempting to load a style in my project's cpp file.

Just before

Application->Initialize ()

I have

Fmx::Types::TFmxObject *style;
style = TStyleStreaming::LoadFromResource((unsigned int)HInstance, L"MacJet", RT_RCDATA);
TStyleManager::SetStyle (style);

where the style named MacJet has been loaded as a resource into the project at design time.

When I activate Win32 as the target platform, this runs fine, and the style shows properly in the application.

When I activate Mac OS X, however, I get an error on the style = ... line, stating

"Exception class SIGSEGV (11)."

When I remove the three lines above and run on Mac, the program loads up.

I'm new to cross-platform development, any ideas what is causing this error?

Why did you cast HInstance to unsigned int? Is it possible for you to debug the FMX code and step through the LoadFromResource function as it executes? — David Heffernan
I am casting from HInstance to unsigned int because of the code sample here docwiki.embarcadero.com/RADStudio/XE6/en/… , which does that when setting a style from a resource in the C++ sample. — Anthony Burg
When I debug, the error message occurs immediately after tracing into that line or trying to step over it. — Anthony Burg
Trying it without the unsigned int cast on the HInstance doesn't seem to change the error. — Anthony Burg
Did you build with debug DCUs? Still, why are you casting? It's is clearly wrong and will break in an x64 build. — David Heffernan

Anthony Burg Anthony Burg · Accepted Answer · 2014-05-20T13:01:21

Workaround solution: instead of using a resource and loading the style before the application initialized, I added a TStyleBook to the application's main form, added the style to the stylebook at design time, and then called TStyleManager::SetStyle () passing in the stylebook's Style property to set the application's style on the main form's Create event.

Loading style from resource on Mac OS X

1 Answers