Hey,

C-Lite gives out and windows error message (program must be terminated..) if I want to use a function out of an DLL, I opened via dll_open.

Example:

Code:

---

long GEdit_fileexist(STRING* GEditfile); //dllfunction for checking the existence of a GameEdit-File

function GameEdit_init_startup()
{
	str_cpy(material_helpstr1,material_data_folder);
	str_cat(material_helpstr1,"\\map-editor\\GameEdit_Small.dll"); //CORRECT PATH
	GEdit_tmp_dll = dll_open(material_helpstr1); //NOT 0!!!
	str_for_num(GEdit_helpstr1,GEdit_tmp_dll);
	diag(GEdit_helpstr1);
	diag(material_helpstr1); //checked.. :)

       str_cpy(material_helpstr1,"hallo");
       GEdit_fileexist(material_helpstr1); //CRASH!
}

---

Copying the DLL into the acknex_plugins folder and starting the function afterwards works perfectly (with exactly the same code).

Code:

---

long GEdit_fileexist(STRING* GEditfile); //dllfunction for checking the existence of a GameEdit-File

function GameEdit_init_startup()
{
       str_cpy(material_helpstr1,"hallo");
       GEdit_fileexist(material_helpstr1); //WORKS
}

---

Bug or any fault on my side?

Thanks for checking,
Timo Stark

You need to add a .wdl file with the name of your main c file and specify plugindir.

You don't need a WDL file, but you need to give the path to the DLL in the dll_open command.

However, dll_open should return NULL when the DLL is not found. Maybe there was a different version of that DLL in the work folder?

No, the DLL is directly in the project folder. So I need a WDL file with plugindir ".";

Otherwise A7 crashes.

plugindir has no effect on dll_open. So your WDL file will also crash.

http://manual.conitec.net/adll_open.htm

Calling a nonexistent function, such as a function from a not found DLL, will cause a crash.

All I have to do is renaming the WDL, and everyhting crashes. With the WDL, it runs perfectly fine.

I tested this with multiple projects and assumed it was the standard way to use.

My dllopen call:
STRING* dll_str = "ackwii.dll"; //name of dll (should be ackwii.dll)
wii_handle_n = dll_open(dll_str);

DLL is located in project directory.

Well I can live with having a WDL file...

Does it change anything when you don't open the dll at all?

The project runs fine without DLL open (surprisingly).

If I rename/delete the WDL file with plugindir "."; inside, it still crashes.

That's not surprising, but logical from what you said - so forget your WDL file for the moment. It has no effect on dll_open, it just changed your PLUGINDIR folder and thus gave you the illusion that dll_open worked.

We need to find why dll_open() appears not to work properly for your DLL. This seems to be a similar problem that TripleX was reporting.

If you want to test this, please remove your WDL file so that it does not interfere, and move the DLL into a subfolder "dll" to your project. Now open the DLL this way:

wii_handle_n = dll_open("dll\\ackwii.dll");

Please check a) if wii_handle_n is nonzero and b) if the DLL works.

On a side note - I see that you're developing a Wii remote dll, which is just what we also planned for the next update. Can you contact me on this? Maybe we can cooperate and save each other some work, or we can just use your code.

I've tried that. The game still crashes, regardless whether I try wii_handle_n = dll_open("dll\\ackwii.dll"); and put the dll into a DLL subfolder or I use wii_handle_n = dll_open(".\\ackwii.dll");

However I noticed that the handle is set correctly, even without WDL file. So it must be some other function relying on plugindir. I'm not doing much else interesting than calling functions directly from the DLL.
Only using a WDL file fixes this for me.



As to the Wiimote DLL I'm using some old public domain C++ source which is no longer maintained, so I started fixing bugs and implementing proper IR support on my own. Things work pretty well now - only supporting the Classic Controller will need some rewrite of poorly designed functions from the original code. I wanted to work on this after January when exams are finished.