BaseFile->Open crash

Helper

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On 21/12/2003 at 16:12, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   8.206
Platform:   Windows ;
Language(s) :     C++ ;

---------
Hi, this code crashes cinema4d and I don't see why

    
    
    
    
     Bool OK=FALSE;  
     Filename File;          
    
    
    
    
     BaseFile *ExportFilename=NULL;     
    
    
    
    
       
     // Show FileSelect dialog  
     if(!File.FileSelect(FSTYPE_ANYTHING,GE_SAVE,NULL))  
     {  
      MessageDialog("Export Cancelled");  
      return FALSE;  
     }
    
    
    
    
     // Set mouse cursor to a busy sign  
     GeShowMouse(MOUSE_BUSY);
    
    
    
    
    GePrint("Before Open");  
     // Open file for exporting  
     OK = ExportFilename->Open(File, GE_WRITE);  
    GePrint("After Open");

it crashes on the ExportFilename->Open line
What am I doing wrong?

Helper

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On 22/12/2003 at 03:30, xxxxxxxx wrote:

Have you actually allocated the BaseFile? the code above doesn't.

Helper

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On 23/12/2003 at 10:36, xxxxxxxx wrote:

Thanks, yes I forgot to allocate it $:\$

Helper

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On 12/02/2005 at 09:53, xxxxxxxx wrote:

how do i have to alloc ?

BaseFile *bfile=NULL;
bfile->Alloc();
bfile->Open(name,GE_WRITE);
crashes again ) :

Helper

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On 12/02/2005 at 10:27, xxxxxxxx wrote:

AutoAlloc<BaseFile> bfile;
if (!bfile) /* panic */
bfile->Open(...);
// do file stuff
bfile->Close();
// bfile is automatically Free()'d when it goes out of scope

or

BaseFile *bfile;
if (!(bfile = BaseFile::Alloc()) /* panic */
bfile->Open(...);
// do file stuff
bfile->Close();
BaseFile::Free(bfile);

Helper

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On 13/02/2005 at 08:48, xxxxxxxx wrote:

thanks, it doesnt crash now,
but my plugin still doesnt create a file ) :
what´s wrong, this time

LONG SMDFilter::Save(PluginSceneSaver *node, const Filename &name, BaseDocument *doc, LONG flags)
{
doc = GetActiveDocument();
    BaseObject *obj = doc->GetActiveObject();
    if(obj)
    {
  //IO
  AutoAlloc<BaseFile> bfile;
  if (!bfile) MessageDialog(" - no file");
  bfile->Open(name,GE_WRITE);
  bfile->WriteString("Claude Bonet Tags: ");
  bfile->Close();
...

Helper

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On 13/02/2005 at 09:20, xxxxxxxx wrote:

Have you checked that 'name' has content and points to a valid path?

I can't see anything obviously wrong, otherwise.

Helper

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On 13/02/2005 at 10:17, xxxxxxxx wrote:

BaseFile *file;
  file = BaseFile::Alloc();
  file->Open(name,GE_WRITE);
  file->WriteString("test");
  BaseFile::Free(file);
i tried it this way, too
nothing happens, no file created
i can´t see the mistake
could you give me a very little example for a plugin that saves a string to a file, plz ??
thanks

Helper

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On 13/02/2005 at 11:23, xxxxxxxx wrote:

It works fine for me here:

AutoAlloc<BaseFile> bf;  
     if (!bf->Open(presetdirectory,GE_WRITE,FILE_NODIALOG,GE_MOTOROLA)) return FALSE;

Helper

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On 13/02/2005 at 12:17, xxxxxxxx wrote:

ok, here is my code, i hope the variable "name" in the save-method is used correctly:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <c4d.h>
class SMDFilter : SceneSaverData
{
    public:
  virtual LONG Save(PluginSceneSaver *node, const Filename &name, BaseDocument *doc, LONG filterflags);
  static NodeData *Alloc(void) { return gNew SMDFilter; }
};

LONG SMDFilter::Save(PluginSceneSaver *node,const Filename &name, BaseDocument *doc, LONG flags)
{
doc = GetActiveDocument();
    BaseObject *obj = doc->GetActiveObject();
    if(obj)
    {
  //IO
  AutoAlloc<BaseFile> bf;
  if (!bf->Open(name,GE_WRITE,FILE_NODIALOG,GE_MOTOROLA))
  return FALSE;

//Polygoncount
  char polybuffer [33];
  GePrint("all Vertices: ");
  GePrint(itoa(static_cast<PolygonObject *>(obj)->GetPointCount(),polybuffer,10));
  //Claudebonet test
        BaseTag *tag = obj->GetFirstTag();

  char ibuffer [33];
  int i=0;
        while(tag->GetType() == Tclaudebonet)
        {
   GePrint(".............");
   VariableTag *gtag = (VariableTag * )tag;
   int cnt = gtag->GetDataCount();
   Real *value = (Real * )gtag->GetDataAddress();
   //read relevant values
   i=0;
   for(int a=0; a<cnt; a++)
   {
    if(value[a]==1.0) i++;
   }
   GePrint(itoa(i,ibuffer,10));
   //go to the next tag
   tag = tag->GetNext();
        }
    }
    else MessageDialog(" - no object");

    return TRUE;
}
Bool RegisterSMD(void)
{
if(!RegisterSceneSaverPlugin(1111111,"SMDex",0, SMDFilter::Alloc, EXECUTION_RESULT_OK, 0, NULL)) return FALSE;
return TRUE;
}

if so, what´s wrong here ?
thanks a lot for your help!!!

Helper

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On 13/02/2005 at 12:23, xxxxxxxx wrote:

The rest of the code shouldn´t have an effect on the save operation. The save code is correct, not sure why it doesn´t work for you. I assume it has something to do with the SceneSaver hook. (however I cannot really judge it, as I haven´t used this hook yet).

Mikael probably knows what´s wrong here, so I suggest to wait for his support.

Katachi

Helper

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On 15/02/2005 at 10:51, xxxxxxxx wrote:

ok, thanks anyway,
i hope Mikael can help me, soon

Helper

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On 28/02/2005 at 13:11, xxxxxxxx wrote:

What return values do you get when not file is created?

Helper

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On 28/02/2005 at 17:01, xxxxxxxx wrote:

i dont see any values in return
AutoAlloc<BaseFile> bf;
if (!bf->Open(name,GE_WRITE,FILE_NODIALOG,GE_MOTOROLA))
MessageDialog(" - no -");
"- no -" never appears

Helper

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On 09/03/2005 at 06:06, xxxxxxxx wrote:

i made another solution:
----------------------------------------------------------------

void writetofile(FILE *fi, String st)
{
char *buffer = bNew char[st.GetLength()+1];
for(int n=0; n < st.GetLength(); n++)
{
  buffer[n] = st[n];
}
fwrite(buffer,1,st.GetLength(),fi);
}
LONG SMDFilter::Save(PluginSceneSaver *node,const Filename &name, BaseDocument *doc, LONG flags)
{
doc = GetActiveDocument();
    BaseObject *obj = doc->GetActiveObject();
    if(obj)
    {
  CHAR header[80];
  ClearMem(header,sizeof(header));
  String str = name.GetString(),
      slash = "/";
  //SUFFIX check
  if(str.SubStr(str.GetLength()-4,4) != ".smd") str += ".smd";

  LONG count = str.GetCString(header,78,St7bit);
  char *ch = bNew char[count+1];
  //String to Char
  for(int a=0; a < count; a++)
  {
   if(str[a]=='\') ch[a] = slash[0];
   else
    ch[a] = str[a];
  }
  FILE *datei;
  datei = fopen(ch,"w+");
  if(datei)
  {
   //file stuff
   writetofile(datei,"version 1\n");
   writetofile(datei,"nodes\n");
  }
  fclose(datei);
//... other code