Eclipse RCP Jface/SWT TreeViewer on Windows 10

Question

I have a RCP application. I recently moved the application to 64 bit. It is based on Eclipse 3.7.0.

I noticed something weird. There is a discrepancy between TreeViewer expand/collapse icons on 32 and 64 bit builds on Windows 10.

From what I understand it goes down to the OS which determines the theme and what to use for the icon.

On 32 bit builds TreeViewer expand/collapse looks like:

On 64 bit builds TreeViewer expand/collapse looks like:

Why are 64 bit builds only using + -? This only happens within my tool. The 64 bit Eclipse platform I am using shows the correct expand/collapse Windows 10 icons.

What can I possibly be doing wrong? Where should I start looking?

I have checked all my initializations of TreeViewers and I am not giving anything special style-wise.

Answer 1

Months passed and I figured out what was causing the issue.

Basically we have a JNI layer which loads some dll that requires MSVCR90.dll. This requires embedding MSVCR90.dll manifest into eclipse.exe used for our RCP, this is done using mt.exe provided by Microsoft Visual Studio.

While building I accidentally didn't embed the MSVCR90.dll manifest, this resulted into the error during loading the dll which says that MSVCR90.dll is missing. I however noticed that the treeview styling looked correct.