Crystal report and visual c

[Guest_imported]

how i can connect crystal reports and visual c?
plz if any one have any snip of code, or any hint kindly reply me

Thanks

 

[MSamoila]

Hi!

I've worked with Crystal Reports in the past. I cannot remember source code which I wrote but I can give you the guide lines:

1. You should use COM to manipulate Crystal Reports.
2. Go in Crystal Reports folders and search all files with .TLB or .OCX extension and with Ole Object Viewer Tool open them to see the type info (the IDL file)
3. Make a Visual C++ project (you don't have to use MFC)
4. Import all COM servers you want from Crystal Reports:

#import "Crystl32.tlb" no_implementation rename_namespace("CRPE")

in your stdafx.h file, and

#import "Crystl32.tlb" implementation_only  rename_namespace("CRPE")

in the file with WinMain.

5. In WinMain make

CoInitialize()

at the beginning and

CoUninitialize()

to the end.

6. Declare smart-pointers for usefull Crystal Reports COM objects (I remember the Application object). You can inspect the associated .TLH file in Debug folder to find helpful information.

E.g.:

try
{
 CRPE::_Application spCrpeApp;
 hr = spCrpeApp.CreateInstance(__uuidof(CRPE::Application));
 if(FAILED(hr))
     _com_issue_error(hr);
 spCrpeApp->Login(    ...      );
}
catch(_com_error e)
{
 _bstr_t str = e.Description()
 if(str.length() == 0)
   str = e.ErrorMessage();
}
[code]
GookLuck!

Marius Samoila
Brainbench MVP for Visual C++
[URL unfurl="true"]http://www.brainbench.com[/URL]