自学教程：C++ strcatW函数代码示例

static void set_desktop_window_title( HWND hwnd, const WCHAR *name ){    static const WCHAR desktop_nameW[] = {'W','i','n','e',' ','d','e','s','k','t','o','p',0};    static const WCHAR desktop_name_separatorW[] = {' ', '-', ' ', 0};    WCHAR *window_titleW = NULL;    int window_title_len;    if (!name[0])    {        SetWindowTextW( hwnd, desktop_nameW );        return;    }    window_title_len = strlenW(name) * sizeof(WCHAR)                     + sizeof(desktop_name_separatorW)                     + sizeof(desktop_nameW);    window_titleW = HeapAlloc( GetProcessHeap(), 0, window_title_len );    if (!window_titleW)    {        SetWindowTextW( hwnd, desktop_nameW );        return;    }    strcpyW( window_titleW, name );    strcatW( window_titleW, desktop_name_separatorW );    strcatW( window_titleW, desktop_nameW );    SetWindowTextW( hwnd, window_titleW );    HeapFree( GetProcessHeap(), 0, window_titleW );}

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