Convert AnsiString to Const char

[davidmelvin]

Hello,

I'm trying to use CopyFile to copy some foles from one location on a drive to another location on another drive. The CopyTo folder is defined by information the user places in a ComboBox. When I try to use ComboBox1->Text for the lpszNewFile, I get an error "can't convert AnsiString to const char".

How can I use the information in the ComboBox Text property in the CopyFile function?

 

[Cagliostro]

do you get
can't convert AnsiString to const char
or
can't convert AnsiString to const char* ?

Ion Filipski

 

[Totte]

Try "ComboBox1->Text for the lpszNewFile.c_str()" or "(const char*)ComboBox1->Text for the lpszNewFile.c_str()"

Totte
Keep making it perfect and it will end up broken.

 

[davidmelvin]

I've tried several configurations and get about the same error. The code looks like this.

CopyFile("C:\\temp\\AcPro8.exe", ComboBox1->Text, false);

And I get the following errors.
[C++ Error] AcP8SPU1.cpp(170): E2034 Cannot convert 'AnsiString' to 'const char *'

[C++ Error] AcP8SPU1.cpp(170): E2342 Type mismatch in parameter 'lpNewFileName' (wanted 'const char *', got 'AnsiString')

I've also tried

CopyFile("C:\\temp\\AcPro8.exe", (const char *)ComboBox1->Text, false);

I get the following error with this code.
[C++ Error] AcP8SPU1.cpp(170): E2031 Cannot cast from 'AnsiString' to 'const char *'

 

[finnmike]

Dear david...
So, just go a little step back and make a .c_str() (which is a const char*, as far as I know) from the text , how totte suggested.
either You have a string of char which is as long as Your
comboboxtext:

char* mycopystring = new char[ComboBox->Text.Length()+1];
and then
strcpy(mycopystring, ComboBox->Text.c_str() );
and then
CopyFile("C:\\temp\\AcPro8.exe", mycopystring, false);
and don't forget
delete mycopystring;

but I think this is what You meant, Totte?
or You try to place the combobox.c_str() right into copyfile:

CopyFile("C:\\temp\\AcPro8.exe", ComboBox->Text.c_str(), false);

Best regards,

Michael

 

[davidmelvin]

Thank you Michael. Problem solved.

I'd also like to thank IonFilipski and Tottle. Thanks for the quick response.

Regards,
David