I'm using RAD Studio XE7 (C++ Builder). For one of my projects, the main form contains several components, like panels, buttons, labels, edit boxes, ..., and several of them have the "auto-size" property activated. Until now I always displayed English texts on this interface, and his opening performances were acceptable.
I recently translated this interface in Japanese. I noticed that the opening time was dramatically slower.
Using a profiler (Shiny), I measured the difference between the two. I noticed that the VCL may process several properties, like the position and size, until 10x slower while the Japanese interface is opening. The performance leak appears clearly while properties like e.g. pControl->Width or pControl->Margins->Top are changing. I didn't modified any line of code between the both versions, only the texts in the DFM files, nothing else.
I cannot believe that the performances of the VCL may degrade as much as this. Is there a known issue in the VCL about the performances with Japanese texts? What are the good practices to prevent a such scenario with the VCL controls?