Managed C++/CLI

<br />
void CBLOBDataDlg::DisplayImageFile(Byte pictureData __gc[])<br />
{<br />
#pragma push_macro("new")<br />
#undef new<br />
  // forward declare so we can use them in <br />
  // the __finally statement<br />
  System::IO::MemoryStream* dataStream = NULL;<br />
  Bitmap* image = NULL;<br />
  Graphics* graphics = NULL;<br />
  CClientDC dc(&m_wndPhoto);<br />
<br />
  try<br />
  {<br />
    CWaitCursor wc;<br />
<br />
	  if (NULL != pictureData)<br />
	  {<br />
		  // Wrap the pictureData in a Stream object<br />
		  // this avoids creating a temporary file<br />
		  dataStream = new System::IO::MemoryStream(pictureData);<br />
<br />
		  // Create Image<br />
		  image = new Bitmap(dataStream);<br />
		  graphics = Graphics::FromHdc(dc.GetSafeHdc());<br />
<br />
		  // Draw background<br />
		  RECT clientRect;<br />
		  m_wndPhoto.GetClientRect(&clientRect);<br />
<br />
		  graphics->FillRectangle(SystemBrushes::Control, <br />
			  clientRect.left, clientRect.top,<br />
			  clientRect.right - clientRect.left,<br />
			  clientRect.bottom - clientRect.top);<br />
<br />
		  // Draw image<br />
		  graphics->DrawImage(image, 0, 0, image->Width, image->Height);<br />
	  }<br />
	  else<br />
	  {<br />
		  // Create graphics object <br />
		  // from HDC<br />
		  graphics = Graphics::FromHdc(dc.GetSafeHdc());<br />
<br />
		  // Draw background<br />
		  RECT clientRect;<br />
		  m_wndPhoto.GetClientRect(&clientRect);<br />
<br />
		  graphics->FillRectangle(SystemBrushes::Control, <br />
			  clientRect.left, clientRect.top,<br />
			  clientRect.right - clientRect.left,<br />
			  clientRect.bottom - clientRect.top);<br />
	  }<br />
  }<br />
  catch(Exception* e)<br />
  {<br />
    MessageBox::Show(e->Message, S".NET Exception Thrown", MessageBoxButtons::OK, MessageBoxIcon::Error);<br />
  }<br />
  __finally<br />
  {<br />
	  // Clean up resources<br />
	  if (graphics) graphics->Dispose();<br />
	  if (image) image->Dispose();<br />
	  if (dataStream) dataStream->Dispose();<br />
  }<br />
#pragma pop_macro("new")<br />
}<br />

<br />
// mcppfaq_string_to_wchart.cpp<br />
// compile with: /clr<br />
#include < stdio.h ><br />
#include < stdlib.h ><br />
#include < vcclr.h ><br />
#using < mscorlib.dll ><br />
using namespace System;<br />
<br />
int main()<br />
{<br />
   String __gc* str = S"Hello";<br />
<br />
   // Conversion to wchar_t* :<br />
   const wchar_t __pin* p = PtrToStringChars(str);<br />
   printf("%S\n", p);<br />
<br />
   // Conversion to char* :<br />
   // Convert wchar_t* to char* using a conversion functionssuch as: <br />
   // WideCharToMultiByte()<br />
   // wcstombs()<br />
   char* ch = (char *)malloc((str -> Length + 1) * 2);<br />
   wcstombs(ch, p, (str -> Length + 1) * 2);<br />
   printf("%s\n", ch);<br />
}<br />

namespace ManagedConsoleXPControls
{
public __gc __abstract class ConsoleControlBase : public CollectionBase{};
}