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Re: Problem with the NULL value

Subject: Re: Problem with the NULL value
From: Andreas Pakulat
Date: Sun, 28 May 2006 00:07:43 +0200
On 27.05.06 16:47:13, elmosquera@xxxxxxxxxxxxxx wrote:
> I need to write this function but I have a problem.

Yes, you're asking an OT question.

> int ConfigurationPage::StartButton_Show_Hide(BOOL bShowHide)
> {
>     HWND    hWnd;
>     const WCHAR *j;
>     hWnd = GetDlgItem(FindWindow(TASKBAR,NULL), ID_STARTBUTTON);
>     if (hWnd == NULL)
>         return 0;
> 
>     ShowWindow(hWnd, bShowHide ? SW_SHOW : SW_HIDE);
>     UpdateWindow(hWnd);
> 
>     return 1;
> }
> 
> 
> 
> pages.cpp:55: error: cannot convert `const char*' to `const WCHAR*' for 
> argument
>  `1' to `HWND__* FindWindowW(const WCHAR*, const WCHAR*)'

This tells you where and what is wrong with your code. TASKBAR is a
const char* but it should be a const WCHAR*. However this function
doesn't have anything to do with Qt, this is win32-api Code.

Andreas

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