Re: [Libusb-win32-devel] libusb with borland c-builder

[25an <man...@gm...>]

Thanks for your quick reply
This is what I did to make It work

In the file usb.h I changed the line where

#include <pshpack1.h>

with

#pragma pack(push, 1)

and at the line where

#include <poppack.h>

with

#pragma pack(pop, 1)

I get some warnings but I will leave them so far

Stephan Meyer wrote:
> 
> 
> See
> http://www.nabble.com/Error-compiling-test-program-tf3508594.html#a9870106
> 
>> 
>> 
>> Hi!
>> 
>> I have just started to use the libusb-win32, I am trying to get it to
>> work
>> with borland c-builder 6 on win XP.
>> If I run the test application testlibusb-win.exe It works just fine but
>> when
>> I take the code and change it for the c-builder I get a problem no mather
>> what I do I cant read the configure descriptor in the usb_device struct
>> the
>> code that I am using is this:
>> 
>> __fastcall TForm1::TForm1(TComponent* Owner)
>>   : TForm(Owner)
>> {
>>   //these method is called whene the GUI is created
>>   usb_init();
>>   usb_find_busses();
>>   usb_find_devices();
>> }
>> //---------------------------------------------------------------------------
>> 
>> void __fastcall TForm1::Button1Click(TObject *Sender)
>> {
>>   // whene button1 on the gui is pushed this method is executed
>>   version = usb_get_version();
>> 
>>   if(version)
>>   {
>>     line = "DLL version:\t";
>>     line += version->dll.major;
>>     line += ".";
>>     line += version->dll.minor;
>>     line += ".";
>>     line += version->dll.micro;
>>     line += ".";
>>     line += version->dll.nano;
>> 
>>     this->Memo1->Lines->Add(line);
>> 
>>     line = "Driver version:\t";
>>     line += version->driver.major;
>>     line += ".";
>>     line += version->driver.minor;
>>     line += ".";
>>     line += version->driver.micro;
>>     line += ".";
>>     line += version->driver.nano;
>> 
>>     this->Memo1->Lines->Add(line);
>>   }
>> 
>>   this->Memo1->Lines->Add("bus/device\t idVendor/idProduct");
>> 
>>   for (bus = usb_get_busses(); bus; bus = bus->next) {
>>     for (dev = bus->devices; dev; dev = dev->next) {
>>       int ret, i;
>>       char string[256];
>>       usb_dev_handle *udev;
>> 
>>       line = bus->dirname;
>>       line += "/";
>>       line += dev->filename;
>>       line += "\t";
>>       line += IntToHex(dev->descriptor.idVendor,1);
>>       line += "/";
>>       line += IntToHex(dev->descriptor.idProduct,1);
>> 
>>       this->Memo1->Lines->Add(line);
>> 
>>       udev = usb_open(dev);
>> 
>>       if (udev) {
>>         if (dev->descriptor.iManufacturer) {
>>           ret = usb_get_string_simple(udev,
>> dev->descriptor.iManufacturer,
>>                                       string, sizeof(string));
>>           if (ret > 0) {
>>             line = "- Manufacturer : ";
>>             line += AnsiString(string);
>>             this->Memo1->Lines->Add(line);
>>           } else {
>>             this->Memo1->Lines->Add("- Unable to fetch manufacturer
>> string");
>>           }
>>         }
>> 
>>         if (dev->descriptor.iProduct) {
>>           ret = usb_get_string_simple(udev, dev->descriptor.iProduct,
>> string,
>>                                       sizeof(string));
>>           if (ret > 0) {
>>             line = "- Product : ";
>>             line += AnsiString(string);
>>             this->Memo1->Lines->Add(line);
>>           } else {
>>             this->Memo1->Lines->Add("- Unable to fetch product string");
>>           }
>>         }
>> 
>>         if (dev->descriptor.iSerialNumber) {
>>           ret = usb_get_string_simple(udev,
>> dev->descriptor.iSerialNumber, 
>>                                       string, sizeof(string));
>>           if (ret > 0) {
>>             line = "- Serial number : ";
>>             line += AnsiString(string);
>>             this->Memo1->Lines->Add(line);
>>           } else {
>>             this->Memo1->Lines->Add("- Unable to fetch serial number
>> string");
>>           }
>>         }
>> 
>>         usb_close (udev);
>>       }
>> 
>>       if (!dev->config) {
>>         this->Memo1->Lines->Add("  Couldn't retrieve descriptors");
>>         continue;
>>       }
>> 
>>       i = 0;
>>       for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
>>         print_configuration(&dev->config[i]);
>>     }
>>   }
>> }
>> //---------------------------------------------------------------------------
>> void TForm1::print_configuration(struct usb_config_descriptor *config)
>> {
>>   int i;
>>   //!!!!!!!The error occur here!!!!!!!!//
>>   unsigned short wtlength = config->wTotalLength; //<======== When I am
>> trying to get any variable in the configure descriptor
>> 
>>   line = "  wTotalLength:         ";
>>   line += wtlength;
>> 
>>   this->Memo1->Lines->Add(line);
>>  
>> }
>> 
>> the error that I get is accsses violation.
>> 
>> -- 
>> View this message in context:
>> http://www.nabble.com/libusb-with-borland-c-builder-tf3827103.html#a10833779
>> Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com.
>> 
>> 
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> 
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View this message in context: http://www.nabble.com/libusb-with-borland-c-builder-tf3827103.html#a10834834
Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com.