QImage::bits() overloaded function

[s410i]

Hello!

In QImage class we have function bits() witch is overloaded:

uchar *	bits ()
const uchar *	bits () const

uchar *	bits ()
const uchar *	bits () const

To copy to clipboard, switch view to plain text mode 

My problem is that when I want to call uchar * bits () function, just like that:

uchar *bitsImage = image.bits();

uchar *bitsImage = image.bits();

To copy to clipboard, switch view to plain text mode 

I'm getting an error:
error: invalid conversion from 'const uchar*' to 'uchar*'

So I would like to ask how I can call the uchar * bits () function?

Best regards
s410i

[yogeshgokul]

Hello!

In QImage class we have function bits() witch is overloaded:

uchar *	bits ()
const uchar *	bits () const

uchar *	bits ()
const uchar *	bits () const

To copy to clipboard, switch view to plain text mode 

My problem is that when I want to call uchar * bits () function, just like that:

uchar *bitsImage = image.bits();

uchar *bitsImage = image.bits();

To copy to clipboard, switch view to plain text mode 

I'm getting an error:
error: invalid conversion from 'const uchar*' to 'uchar*'

So I would like to ask how I can call the uchar * bits () function?

Best regards
s410i

Although its strange.
Anyway you can use casting operators. e.g.

uchar *bitsImage = const_cast <uchar*> image.bits();

uchar *bitsImage = const_cast <uchar*> image.bits();

To copy to clipboard, switch view to plain text mode 

[wysota]

So I would like to ask how I can call the uchar * bits () function

This works fine for me:

#include <QImage>
 
int main(){
  QImage img;
  uchar *bits = img.bits();
  return 0;
}

#include <QImage>

int main(){
  QImage img;
  uchar *bits = img.bits();
  return 0;
}

To copy to clipboard, switch view to plain text mode 

Your "image" variable is probably const. You can't call non-const methods on a const object.

[s410i]

Thank you very much

const QImage was the problem.

Best regards
s410i