Displaying Handle in Messagebox?

How do I display a window handle in Messagebox after using the CreateWindowEx function?

This is how I'm using Messagebox:
MessageBox(NULL, hListbox, "Window Handle!", MB_OK);

And it gives the following error:
error C2664: 'MessageBoxA' : cannot convert parameter 2 from 'struct HWND__ *' to 'const char *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

Look into sprintf( ).

char str[56];
wsprintf(str, "0x%x", hListBox);
::MessageBox(NULL, str, "Window Handle!", MB_OK);

Thanks, just tried that, but now it gives 2 error's =o( :

error C2065: 'hListBox' : undeclared identifier
error C2664: 'MessageBoxA' : cannot convert parameter 2 from 'struct HWND__ *' to 'const char *'

It's a point in the right direction though.

Quote:

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Originally posted by Knight Chat X
error C2065: 'hListBox' : undeclared identifier

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That's the variable name you were trying to output. If the variable doesn't exist, that explains this error.

Quote:

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Originally posted by Knight Chat X
error C2664: 'MessageBoxA' : cannot convert parameter 2 from 'struct HWND__ *' to 'const char *'

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This means you have an HWND in your MessageBox() call still. You didn't do what I did.


edit: I just looked at your variable name, it's different in capitalization. Just make the proper spelling fix.

Here's how I have it now:

//Global Variable.
HWND hListbox=0;

//Create Listbox.
hListbox = CreateWindowEx(WS_EX_CLIENTEDGE, Listbox_Class, NULL, WS_VSCROLL | WS_VISIBLE | WS_BORDER | WS_CHILD | LBS_HASSTRINGS | LBS_NOINTEGRALHEIGHT, 0, 0, LB_WIDTH, LB_HEIGHT, hParent, NULL, hInst, NULL);

char str[56];

wsprintf(str, "0x%x", hListBox);

//Display listbox handle in messagebox.
::MessageBox(NULL, hListBox, "Window Handle!", MB_OK);

Ok, just got your other post after I already sent the last post, oops!!! lol =o)