Dll support: testers needed

[Dylan Graham]

On Tuesday, 9 January 2018 at 03:50:25 UTC, Dylan Graham wrote:
> On Monday, 8 January 2018 at 09:01:29 UTC, Benjamin Thaut wrote:
> I'm waiting on VS2015 and Windows SDK to install. Once that's 
> done, I'll begin testing.
>
> Also, thanks a tonne for doing this.

I've done a test that mimics that the planned plugin system for 
my game.

There is a core/engine which is built as a DLL. It exports a 
class called PluginBase. It also exports a function called 
getPlugins (to be run from an executable) that searches for 
plugin DLLs and calls a function from those plugin DLLs that 
returns their own override of PluginBase. It then runs a few 
functions on the object and prints the typeid().

The core is built with:
dmd -m64 -shared -useshared -version=Shared -H pluginbase.d 
-L/IMPLIB:pluginbase.lib

The resulting pluginbase.di and pluginbase.lib is copied into the 
directory of Plugin1 which builds against them.
Command: dmd -m64 -shared -useshared plugin1.d pluginbase.lib

I then made an executable that builds against pluginbase and 
calls getPlugins().
Command: dmd -m64 -useshared app.d pluginbase.lib

pluginbase.dll and plugin1.dll are placed next to the executable.
Running it prints this:

PS C:\dmd-dll\test\execut> ./app.exe
Plugin1                    -- (name of plugin defined by 
overriden class)
Hello world from Plugin1   -- (function of that class)
plugin1.Plugin1            -- (typeid of that class)

It's pretty basic but I'm glad it works. I'll try doing something 
more advanced.