Error C2665 Messagebox

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Forum Visual C++ & C++ Programming Managed C++ and C++/CLI Newbie - Build Error, MessageBox If this is your first visit, be sure to check out the http://forums.codeguru.com/showthread.php?522662-Newbie-Build-Error-MessageBox FAQ by clicking the link above. You may have to register or Login before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 2 of 2 Thread: Newbie - Build Error, MessageBox Tweet Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode error c2665 Switch to Hybrid Mode Switch to Threaded Mode April 3rd, 2012,10:17 AM #1 stoneferry View Profile View Forum Posts Junior Member Join Date Apr 2012 Posts 4 Newbie - Build Error, MessageBox Hi all, I'm new to VC++, and cannot figure out why my MessageBox call here is error'ing out when executed: Code: Code: void center(char *s) { int len; len = (strlen(s)); MessageBox::Show(len); } The resulting error c2665 messagebox build would produce: Code: 1>c:\users\test\documents\visual studio 2010\projects\test\test\Form1.h(90): warning C4068: unknown pragma 1>c:\users\test\documents\visual studio 2010\projects\test\test\Form1.h(116): warning C4101: 'found' : unreferenced local variable 1>c:\users\test\documents\visual studio 2010\projects\test\test\Form1.h(152): error C2665: 'System::Windows::Forms::MessageBox::Show' : none of the 21 overloads could convert all the argument types 1> c:\program files\reference assemblies\microsoft\framework\.netframework\v4.0\system.windows.forms.dll: could be 'System::Windows::Forms::DialogResult System::Windows::Forms::MessageBox::Show(System::String ^)' 1> while trying to match the argument list '(int)' Thanks in advance Reply With Quote April 3rd, 2012,11:16 AM #2 Eri523 View Profile View Forum Posts Elite Member Join Date Jun 2010 Location Germany Posts 2,634 Re: Newbie - Build Error, MessageBox Actually, that program doesn't ever reach the state of being executed since it doesn't even compile. The error you get (and only the C2665, the two warnings are unrelated to the code snippet you posted) is due to the fact that there is no overload of MessageBox::Show() that takes a single parameter of type int. The solution to that would be to convert the int to a string yourself and then pass the result of that to MessageBox::Show(), like this: Code: MessageBox::Show(len.ToString()); Also, as I see you have a function there that takes a parameter of type char *, I think it's worth mentioning that, while possible, mixing managed and na