This is a dialog type which is visually similar to MessageBox, but have much more customizable options. This dialog is written with WinAPI (no VCL) and it's a preferred dialog in development environments, where you need much options.
The dialog also have so-called "detailed" form which displays bug report. See this article for more information about bug reports.
It may be not a good idea to use it for end-user application, since this dialog is a bit too technical, so it may be not very user-friendly for non-advanced users.
Note: error messages in dialogs are controlled by nested exceptions behaviour options.
Dialog have wide range of options:
Minimalistic view of EurekaLog dialog
EurekaLog dialog with all options checked
EurekaLog dialog with "EurekaLog style"
EurekaLog dialog in detailed mode with all options unchecked
EurekaLog dialog in detailed mode with all options checked
Compare it with typical MessageBox dialog:
A typical MessageBox dialog
A typical EurekaLog dialog
And here is a comparison with MS Classic dialog:
MS Classic dialog type
EurekaLog dialog type
Constant: edtEurekaLog, edtEurekaLogDetailed.