Child window outside of parent

[Mithoric]

I want to make my own little window, but how do I get it to be moveable outside of it's parent?

I've tried the WS_POPUP style but it doesn't show up after that! Am I supposed to handle something in the window proc?

[Dante Shamest]

I want to make my own little window

How are you creating the window? Using CreateWindowEx()?

If you're talking about creating an owned window, register and create a new window. Set the owner window in CreateWindowEx().

Alternatively, use CreateDialog() and a dialog resource.

[Mithoric]

It is first registered using registerclassex and then I handle the painting in it's proc. I am just using CreateWindow() to make it. Should I be using CreateWindowEx()? I don't see how unless I am setting an extended style, which at this point in time I don't think I am in need of doing.

[novacain]

Are you using the WS_CHILD and WS_POPUP?

If so don't, they can't be combined.

Don't make the new window a child.

[Mithoric]

Nope, only WS_VISIBLE|WS_POPUP .. I had read in MSDN that ```````

[novacain]

does it get to the new windows WM_CREATE? (ie put a break point there)


Pure speculation without code...

>>but how do I get it to be moveable outside of it's parent?

Child windows are restricted to the parents client area.
MSDN: "A child window has the WS_CHILD style and is confined to the client area of its parent window."

Also try moving it to the front of the z-order with SetWindowPos() HWND_TOPMOST, could be under another window?

I have had problems with winclasses not registering properly. Sometimes spaces in the winclass name cause problems.

[Mithoric]

Well I gather it gets to the WM_CREATE because you can see it..

Here is how I register it -

bool RegisterCLPSWnd ( HINSTANCE hInstance ) {
    
    WNDCLASSEX wnclex;
    wnclex.cbSize = sizeof ( WNDCLASSEX );
    wnclex.style = CS_DBLCLKS;
    wnclex.lpfnWndProc = clpswndproc;
    wnclex.cbClsExtra = 0;
    wnclex.cbWndExtra = sizeof( CLPSWNDSTRUCT*);
    wnclex.hInstance = hInstance;
    wnclex.hIcon = NULL;
    wnclex.hCursor = LoadCursor ( NULL, IDC_ARROW );
    wnclex.hbrBackground = GetSysColorBrush ( COLOR_3DFACE );
    wnclex.lpszMenuName = NULL;
    wnclex.lpszClassName = "mith32_clpswnd";
    wnclex.hIconSm = NULL;
    if ( !RegisterClassEx ( &wnclex ) ) {
        MessageBox ( NULL, "Unable to register class 'mith32_clpswnd'", "Error!", MB_ICONERROR );
        return false;
    }
    return true;
}

And this is the window proc--

LRESULT CALLBACK clpswndproc ( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam ) {
    
    CLPSWNDSTRUCT *cpw = (CLPSWNDSTRUCT*)GetWindowLong( hwnd, 0 );
    switch ( msg ) {
        
        case WM_NCCREATE: {
         CLPSWNDSTRUCT* cpw = (CLPSWNDSTRUCT*)malloc(sizeof(CLPSWNDSTRUCT));
         if( cpw == NULL ) {
           MessageBox( NULL, "wm_nc.clpswndproc Failed!", "Error", MB_ICONERROR );
         }
         cpw->docked=true;
         SetWindowLong( hwnd, 0, (LONG)cpw );
         return true;
        }
        case WM_LBUTTONDOWN: {
          
          //TODO.
          return 0;
        }
        case WM_PAINT: {
         
         PAINTSTRUCT ps;
         BeginPaint( hwnd, &ps );
          DrawCLPSWnd( hwnd, (CLPSWNDSTRUCT*)GetWindowLong( hwnd,0) );
         EndPaint( hwnd, &ps );
         return 0;
        }
        
    }
    
    return DefWindowProc( hwnd, msg, wParam, lParam );
}

If I specify WS_VISIBLE|WS_POPUP it just doesn't get to the WM_CREATE ( I think this is what you were getting at )..

[Dante Shamest]

Could I see what your CreateWindowEx() code looks like for your child/owned window?

[Mithoric]

Sure -- It's done through a member of the class cCtrlBase.

How I init it --

abtwnd.InitEx ( NULL, "mith32_clpswnd", "About GUI Magic.", 100,100, 350, 125,
                    -1,WS_VISIBLE| WS_OVERLAPPED | WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, hwnd );

Member part --

this->hSelf = CreateWindowEx ( this->dwStyleEx, this->lpClass, this->lpText, this->dwStyle, this->x, this->y,
        this->cx, this->cy, this->hPrnt, (HMENU)this->id, GetModuleHandle(NULL), NULL );

[novacain]

Try,

m_Dlg.Create(MAKEINTRESOURCE(IDD_DIALOG),this);


or

Don't use WS_CLIPSIBLINGS (as have to have the WS_CHILD as well)

Don't cast the menu to an int ID unless using the child style ( (HMENU)this->id )

[Mithoric]

K, I'll have a little fiddle and mod my member to allow for that.

[Mithoric]

Yay! I modified my class member init function to allow for using no id and it works nicely.

Thanks a bunch!