Hi,

your code would work only within the VM process.

To get a screenshot from another process, you should use TakeScreenShotToArray API.
It uses a safe array instead of a memory buffer to get the bitmap.

Best regards,
Vitali.


[email protected] wrote:
Hi Guys!

First of all, this is the first time I'm using a Mailing List, so I hope I 
don't do anything wrong!

My Problem is that I want to get a screenshot from a running VirtualBox using 
C++ COM Interface on Linux.

Here is the code I'm trying to use:

                                                 #define CERR(x) 
if(NS_FAILED(rc)) printErrorInfo(x);

                                                 PRUint32 width = 0, height = 
0, bpp = 0;
                                                 int buffersize;
                                                 BYTE* databuff;

                                                 rc = 
display->GetScreenResolution(0,&width,&height,&bpp);
                                                 CERR("GetScreenResolution")

                                                 buffersize = width*height*4;
                                                 databuff = (BYTE*) new char 
[buffersize];

                                                 if (databuff != NULL)
                                                 {
                                                         rc = 
display->TakeScreenShot(0,databuff,width,height);
                                                         cout<<  "rc = "<<  hex<<  
rc<<  endl;

                                                 }

But TakeScreenShot() returns NS_ERROR_UNEXPECTED :\
I'm using the actual OSE Release. First I built VirtualBox and then I linked my 
Code with the built libraries.

Then I started the VirtualBox Frontend, booted the VM and then I tried to get 
the screenshot using the code above.. But it doesn't work :\

Is there any other SDK  API I could use?

Thanks in advance.


PS: I used google but did not find anythin which helped me to solve my problem 
:(

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