wxDynamicLibrary help!
in [wxWindows]
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From: "rozni yusof" on 12 Dec 2006 02:32 Err, nevermind... I restarted my PC, and the stuff works.... Thank you guys! I was wondering if I was going to have to create a link library... not something I relish, dlltool not being that good. On 12/12/06, rozni yusof <rozniy(a)gmail.com> wrote: > I looked in the Control Panel, and gave the name "DT9834(00)" to the > olDaInitialize. > > LPHDEV lphDev=0; > ecode= DTolDaInitialize("DT9834(00)", lphDev); > > It gave some memory problems when run... "Can't be written" or > something like that. > > Am I on the right track? > > > On 12/11/06, Michael Hieke <michael.hieke(a)elwi-elektronik.de> wrote: > > Sorry for getting off-topic here... > > > > rozni yusof wrote: > > > > > 'Tis a proprietary device driver for a Data Translation DAQ card... > > > that company only provides drivers for Microsoft Visual C++ (and > > > .NET), and I'm trying to access the functions in the DLL > > > > It is no problem to access the driver DLL from any language capable of > > creating programs for MS Windows; we do it from Delphi, with a suitable > > import unit created from the information in the header file. > > > > > typedef ECODE (wxSTDCALL *DT_InitType)(PSTR, PHDEV); > > > DT_InitType DTolDaInitialize= (DT_InitType) > > > dll.GetSymbol("olDaInitialize"); > > > PSTR lpszName=""; LPHDEV lphDev=0; > > > > This seems to be the problem, if the name is empty it can not find the > > matching device. Try the device name that is listed in the Open Layers > > control panel instead, it should work. Something like "DT303_1", or > > "DT9800_1" in your case. > > > > > I have never bothered with Visual C++ before, but looks like I'll > > > have to start... > > > > No need to, but have a look at their documentation and samples... > > > > HTH > > > > -- > > Michael Hieke > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org > > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
From: Michael Hieke on 12 Dec 2006 08:31 rozni yusof wrote: > You have worked with Data Translation devices too? Yes. DT300 and DT3010 series cards, up to three in parallel. > Err.. I thought the olDaInitialize function was supposed to tell you > the device name in the lpszName argument? No. Install the DA SDK, and have a look at DASDK.HLP, it's all explained there. > So, you're actually supposed to *provide* its name? Yes. How else are you going to access the correct card if you have more than one in the system? I guess olDaEnumBoards() and similar would help you to find the name. BTW: I'm glad it seems to work for you now ;-) Thanks -- Michael Hieke --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
From: "rozni yusof" on 14 Dec 2006 02:17 The driver is temperemental though... sometimes I get memory errors, sometimes it works. All I did is this: if(dll.Load("oldaapi32.dll")) wxLogMessage("successful load"); ECODE ecode; wxString wxstr; typedef ECODE (wxSTDCALL *DT_InitType)(LPSTR, LPHDEV); DT_InitType DTolDaInitialize= (DT_InitType) dll.GetSymbol("olDaInitialize"); LPSTR lpszName="DT9834(00)"; LPHDEV lphDev; ecode= DTolDaInitialize("DT9834(00)", lphDev); wxstr.Printf("Initialize %i", ecode); wxLogMessage(wxstr); dll.Unload(); if(!dll.IsLoaded()) wxLogMessage ("successful unload"); On 12/12/06, Michael Hieke <michael.hieke(a)elwi-elektronik.de> wrote: > rozni yusof wrote: > > > You have worked with Data Translation devices too? > > Yes. DT300 and DT3010 series cards, up to three in parallel. > > > Err.. I thought the olDaInitialize function was supposed to tell you > > the device name in the lpszName argument? > > No. Install the DA SDK, and have a look at DASDK.HLP, it's all > explained there. > > > So, you're actually supposed to *provide* its name? > > Yes. How else are you going to access the correct card if you have more > than one in the system? I guess olDaEnumBoards() and similar would help > you to find the name. > > BTW: I'm glad it seems to work for you now ;-) > > Thanks > > -- > Michael Hieke > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
From: Michael Hieke on 14 Dec 2006 02:44 Hi, rozni yusof wrote: > The driver is temperemental though... sometimes I get memory errors, > sometimes it works. > LPSTR lpszName="DT9834(00)"; > LPHDEV lphDev; > > ecode= DTolDaInitialize("DT9834(00)", lphDev); Try HDEV hDev = 0; ecode = DTolDaInitialize("DT9834(00)", &hDev); instead. HTH -- Michael Hieke --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
From: "rozni yusof" on 14 Dec 2006 02:47
Works like a charm. THanks, man... I always did have trouble with pointers. On 12/14/06, Michael Hieke <michael.hieke(a)elwi-elektronik.de> wrote: > Hi, > > rozni yusof wrote: > > > The driver is temperemental though... sometimes I get memory errors, > > sometimes it works. > > > LPSTR lpszName="DT9834(00)"; > > LPHDEV lphDev; > > > > ecode= DTolDaInitialize("DT9834(00)", lphDev); > > Try > > HDEV hDev = 0; > ecode = DTolDaInitialize("DT9834(00)", &hDev); > > instead. > > HTH > > -- > Michael Hieke > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org |