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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span>I am new to
<span class=SpellE>VTK</span>. I am trying to convert the </span></font><span
style='mso-no-proof:yes'>vtkWin32OpenGLRenderWindow to an image file. </span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span>I have
written the following code in VC++. When I execute the code, memory error will
occur.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>If I go for converting <span
class=SpellE>vtkRenderWindow</span> with the same code it works fine.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Please</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <font
color=navy><span style='color:navy'>guide me how to solve this</span></font>.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Code is as follows:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><span class=SpellE><span
class=GramE><font size=2 face=Arial><span style='font-size:10.0pt;font-family:
Arial'>int</span></font></span></span><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>* <span
style='mso-spacerun:yes'> </span>size<span style='mso-spacerun:yes'>
</span>= this-><span class=SpellE>renWin</span>-><span class=SpellE>GetSize</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-spacerun:yes'> </span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span>//Setup
memory rendering<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>this</span>-><span class=SpellE>renWin</span>-><span
class=SpellE>SetupMemoryRendering</span>( size[0], size[1], this-><span
class=SpellE>GetDC</span>()-><span class=SpellE>m_hAttribDC</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>this</span>-><span class=SpellE>renWin</span>->Render();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>vtkWindowToImageFilter</span></span> * <span
class=SpellE>ImageFilter</span><span style='mso-spacerun:yes'> </span>= <span
class=SpellE>vtkWindowToImageFilter::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE>ImageFilter</span>-><span class=SpellE><span class=GramE>SetInput</span></span><span
class=GramE>(</span>this-><span class=SpellE>renWin</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE>ImageFilter</span>-><span class=GramE>Update(</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>vtkBMPWriter</span></span>* <span class=SpellE>bmpWriter</span>=<span
class=SpellE>vtkBMPWriter::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>bmpWriter</span></span>-><span class=SpellE>SetInput</span>(<span
class=SpellE>ImageFilter</span>-><span class=SpellE>GetOutput</span>());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>bmpWriter</span></span>-><span class=SpellE>SetFileName</span>("c:\\image.bmp");<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>bmpWriter</span></span>->Write();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE>ImageFilter</span>-><span class=GramE>Delete(</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>bmpWriter</span></span>->Delete();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>this</span>-><span class=SpellE>renWin</span>-><span
class=SpellE>ResumeScreenRendering</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;mso-no-proof:yes'> <span style='mso-tab-count:1'> </span>in
above code “renWin” is an instance of vtkWin32OpenGLRenderWindow.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;mso-no-proof:yes'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;mso-no-proof:yes'>Thanks <font color=navy><span style='color:navy'>&
</span></font>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;mso-no-proof:yes'>Sudeep.<o:p></o:p></span></font></p>
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