First of all, what is it exactly? I guess it is a pointer (LPC means long pointer constant), but what does "W" mean? Is it a specific pointer to a string or a pointer to a specific string? For example I want to close a Window named "TestWindow".
HWND g_hTest;
LPCWSTR a;
*a = ("TestWindow");
g_hTest = FindWindowEx(NULL, NULL, NULL, a);
DestroyWindow(g_hTest);
The code is illegal and it doesn't work since const char[6] cannot be converted to CONST WCHAR.
I don't get it at all.
I want to get a clear understanding of all these LPCWSTR, LPCSTR, LPSTR. I tried to find something , however I got confused even more. At msdn site FindWindowEx
is declared as
HWND FindWindowEx(
HWND hwndParent,
HWND hwndChildAfter,
LPCTSTR lpszClass,
LPCTSTR lpszWindow
);
So the last parameter is LPCSTR, and the compiler demands on LPCWSTR. Please help.
LPCWSTR
stands for "Long Pointer to Constant Wide String". The W stands for Wide and means that the string is stored in a 2 byte character vs. the normal char
. Common for any C/C++ code that has to deal with non-ASCII only strings.=
To get a normal C literal string to assign to a LPCWSTR
, you need to prefix it with L
LPCWSTR a = L"TestWindow";