binding to windows dll

[anotherche]

Hi,

First of all, I have successfully used gphoto2-java to make a GUI for time-lapse capture working on Linux platform. Thank you!
Next, I wanted to make the same for Windows. Native dlls were built using MSYS2 mingw64 environment Windows port - few questions #97. So, long story short, I could not use those dlls with gphoto2-java.

I tried to account for all requirements:
both jre and dll are 64 bit;
all dependencies (a number of dlls required by gphot2.dll) are collected in one folder and jna.library.path set to this folder;
jna.debug_load=true reports that the library is found in the path specified by jna.library.path.
The error log: hs_err_pid1524.log
Additionally, I tried to import the library in c# code. I have checked only gp_library_version function. No success. HRESULT: 0x8007007E (dll not found exception), although all the dependencies are located in the folder with the exe.
But, at the same time, I succeed when I use the library dynamically loaded in a simple c++ program with all conditions the same: all dependencies are placed in the folder with .exe. The .exe is built as 64 bit application to correspond to the 64-bit dlls. Again, I have checked only gp_library_version function, and it returned the strings with the library info, as it should. So, the windows port of the library seem to work normally.
It seems that both c# and Java can not use this windows port because of some problems with loading functions from dlls dependent by the library. What can be done?