problem with strcpy
Author
i dunno but i always seem to have trouble with this and can never figure it out.
LPCTSTR *ClassName;
void WinMainF::SetClassName(LPCTSTR *Name)
{
strcpy(ClassName, Name);
}
error C2664: ''strcpy'' : cannot convert parameter 1 from ''const char ** '' to ''char *''
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
The secret is in the macro/typedef name.
LPCTSTR is already a pointer, so the correct definition is:
LPCTSTR ClassName;
(same for the other definition)
The error does actually say that, but it might not be obvious.
[edited by - JuNC on November 30, 2003 2:52:31 PM]
LPCTSTR is already a pointer, so the correct definition is:
LPCTSTR ClassName;
(same for the other definition)
The error does actually say that, but it might not be obvious.
[edited by - JuNC on November 30, 2003 2:52:31 PM]
Author
still get this error
error C2664: 'strcpy' : cannot convert parameter 1 from 'const char *' to 'char *'
[edited by - Rydis on November 30, 2003 3:35:24 PM]
error C2664: 'strcpy' : cannot convert parameter 1 from 'const char *' to 'char *'
[edited by - Rydis on November 30, 2003 3:35:24 PM]
From MAPINLS.H in visual studio:
...
typedef const TCHAR FAR * LPCTSTR;
...
From MSDN:
The const keyword modifies the type of a type declaration or the type of a function parameter, preventing the value from varying.
Perhaps you could try:
LPTSTR ?
Floru
Author
yes that works but would it work if i pass it to the CreateWindow Function which takes a LPCTSTR?
Yes, you can happily do a char* -> const char* conversion, you don''t lose any of the qualifiers (in fact you gain). A const char* -> char* is invalid because it implies that you change an immutable string into a mutable string (well array really but lets not quibble). So if you do this you need to be explicit and add a cast.
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