StartRawDocument: The data is invalid.

[palevi67]

I'm getting an "The data is invalid" error when calling StartRawDocument ... this was working some weeks ago, so I think it might be caused by some OS upgrade.

¿Any idea?

I'm under W11.

[alexbrainman]

¿Any idea?

No idea. Sorry.

Alex

[palevi67]

I have traced down the program and found the error was generated in the DriverInfo() function. I changed it to the following, and now StartRawDocument() is working again:

// DriverInfo returns information about printer p driver.
func (p *Printer) DriverInfo() (*DriverInfo, error) {
	var needed uint32
	err := GetPrinterDriver(p.h, nil, 8, nil, needed, &needed)
	if err != syscall.ERROR_INSUFFICIENT_BUFFER {
		return nil, err
	}
	b := make([]byte, needed)
	err = GetPrinterDriver(p.h, nil, 8, &b[0], needed, &needed)
	if err != nil {
		return nil, err
	}
	di := (*DRIVER_INFO_8)(unsafe.Pointer(&b[0]))
	return &DriverInfo{
		Attributes:  di.PrinterDriverAttributes,
		Name:        windows.UTF16PtrToString(di.Name),
		DriverPath:  windows.UTF16PtrToString(di.DriverPath),
		Environment: windows.UTF16PtrToString(di.Environment),
	}, nil
}

[alexbrainman]

I have traced down the program and found the error was generated in the DriverInfo() function. I changed it to the following, and now StartRawDocument() is working again:

I am glad it works for you.

I still do not understand why it fixes your problem. But I don't use this code myself, so I won't spend time investigating it.

Alex