Code Assistance

[Ron]

You can't hardcode the 0, you must use a number returned by Girder. (showTreepicker)

[Mark F]

Do you really have the 0 hardcoded in GetLinkName(0)? Or was this value returned from TreePickerShow?

I'm just guessing but I think the GetLinkName interface assumes you are passing something retrieved from TreePickerShow and 0 is invalid.

[JayGuerette]

I'm trying to access Girder support functions inside a hardware plugin. Here's the pertinent snippets of code:




<girder.h>

typedef struct s_TFunctionsEx2 { /* Version 2 */
DWORD dwSize;
PSetGirderReg SetGirderReg;
PGetGirderReg GetGirderReg;
PParseRegString ParseRegString;
PGetLinkName GetLinkName;
PSetCommand SetCommand;
PTargetEnum TargetEnum;
PI18NTranslate I18NTranslate;
PReallocPCHAR ReallocPchar;
PShowOSD ShowOSD;
PHideOSD HideOSD;
PStartOSDDraw StartOSDDraw;
PStopOSDDraw StopOSDDraw;
PTreePickerShow TreePickerShow;
HWND TargetHWND;
} TFunctionsEx2;

TFunctionsEx2 Girder;
extern TFunctionsEx2 Girder;


<girder.cpp>

__declspec(dllexport) int h_support_functions(void *s)
{
TFunctionsEx2 *p;
if (s==NULL) {
return 2; // version 2 hardware support functions
}
else
{
p=(TFunctionsEx2 *)s;
if (p->dwSize!=sizeof(TFunctionsEx2)) {
return GIR_ERROR;
}
memcpy((void *)&Girder, s, sizeof(TFunctionsEx2));
}
return 0;
}


char *buf;
MessageBox(0, "here comes a crash", "Error",0);
buf=(PCHAR)Girder.GetLinkName(0);
MessageBox(0, buf, "Error",0);


The header file has all the other standard girder.h stuff in it, I just snipped the important stuff.

All this code lives inside a current living and breathing hardware plugin that works fine. I just added this code to try it.

When I hit the "buf=(PCHAR)Girder.GetLinkName(0);" line, I get a fatal error and Girder crashes.

Any ideas on what am I doing wrong?


<font size=-1>[ This Message was edited by: JayGuerette on 2001-07-29 07:37 ]</font>

<font size=-1>[ This Message was edited by: JayGuerette on 2001-07-29 07:38 ]</font>

[JayGuerette]

Yes, I hard coded the 0. I assumed (incorrectly?) that the TreePicker values would merely be an index starting at 0...?

[JayGuerette]

I was trying to cheat... enumerating the commands through the API without displaying the Tree window.