Need dialog parent's handle

[Bruce Peaslee]

My program opens a dialog when the user clicks on one of many windows. I am trying to fill the dialog's controls based on the window that was clicked. I have already stored the windows' handles, to compare against the dialog's parent handle. That way, I would know what window was selected. However, in the dialog's OnInitDialog() method:

If (Lot = GetParent(this))

fails, because GetParent() is returning zero.

[Zen]

It might seem a bit silly but have you set the parent on the dialog to the window its being called from or are you leaving it null?

Lewis

[Bruce Peaslee]

It's set. That's to keep the user from clicking on another window while the dialog is displayed.

(It's not silly - I couldn't get my toaster to go down last week because it wasn't plugged in!)

[Ionic Wind Support Team]

If your using the API function GetParent then you need to pass it a window handle, not a class pointer.

If (Lot = GetParent(m_hWnd))

The API function returns a window handle, not a class pointer.

[Zen]

Ohh sorry Peaslee i didnt know from your post you were using the API GetParent. i thought it must have been a built in class method.

Sorry.

Lewis

[Bruce Peaslee]

OK. Now I get a numberÂÃ,  ;)ÂÃ,  but it doesn't match any that I have been savingÂÃ, 

When I create the windows from which the dialog is called, I store what I think is the handle to the window.

Code Select Expand


pTemp = new(MapWindow,1);
pTemp -> Create(...);
...
Lot[i].hwnd = pTemp;


This scheme does work when I open another window when the mouse hovers over these.

[Ionic Wind Support Team]

pTemp is a pointer to a windows class..which you are creating with NEW.

pTemp->m_hWnd would be the windows OS handle.  The same returned by GetParent of the dialog.

Just like in IBasic Pro win.hwnd was the windows OS handle.  Same idea, different language.

[Parker]

... And when there's operator overloading, we can make a 'unsigned int()' operator that automatically does that for you, right Paul

[Bruce Peaslee]

I've made the adjustment, but it's still not working. As before, I can still open another window when hovering, but the dialog that appears when I click on a window has a parent handle I can't match. Maybe the problem has to do with the parent of a dialog. Is it the window in which I clicked?

[Ionic Wind Support Team]

The would depend on what you sent as the 'parent' parameter of the Create statement.

[Bruce Peaslee]

Code Select Expand


class Mapwindow:Window
{
ÂÃ,  ...
ÂÃ,  declare CreateDialog();
ÂÃ,  dlg1 *d1;
}

MapWindow::CreateDialog()
{
...
ÂÃ,  d1 = new(dgl1,1);
ÂÃ,  d1->create(0,0,853,453,0x80C80080,0,"Edit Data",this);
...
}

dlg1::OnInitDialog()
{
...
if (Lot[i].hwnd = GetParent(m_hWnd))ÂÃ,  // never matches ??
...
}

global sub main()
{
MapWindow *pTemp
...
pTemp = new(MapWindow,1)
...
Lot[i] = pTemp->m_hWnd
...
}


I hope that's enough to get the idea of what I'm attempting. The code is getting really large to post the whole thing.

[Ionic Wind Support Team]

Code Select Expand


pTemp = new(MapWindow,1)
...
Lot[i] = pTemp->m_hWnd



You do have a Create statement in there somewhere...right?

And how are you delcaring Lot?   The correct array would be an unsigned int.

def Lot[10] as unsigned int;.

Because a HWND is a HANDLE is an unsigned int if you look through MSDN.

Paul.

[Bruce Peaslee]

OOPsÂÃ, 

That should be:

Lot.hwnd = pTemp->m_hWnd;

My mistake in retyping for this message rather than pasting...

It's an unsigned int.

I create the dialog above in the MapWindow::CreateDialog method.

[Ionic Wind Support Team]

What I meant was the Create for the MapWindow.  m_hWnd will be NULL until you Create the window.

It does seem your going about this in a difficult manner.  Since your deriving your dialogs from the dialog class you could simply use a class member variable.

class dlg1:dialog
{
MapWindow *parent;
...
}

MapWindow::CreateDialog()
{
...
  d1 = new(dgl1,1);
  d1->create(0,0,853,453,0x80C80080,0,"Edit Data",this);
  d1->parent  = this;
...
}

Then you always know which dialog belongs to which window.  Just guessing of course because your code really doesn't show what your trying to accomplish.

Paul.

[Bruce Peaslee]

It does seem your going about this in a difficult manner.

Well, your right about that!ÂÃ, 

I just got off the recliner myself - so it's off to bed. I'll try again tomorrow.

[Bruce Peaslee]

Got it! ÂÃ,¡Mil gracias!

One side question: I couldn't use

MapWindow *parent;

because MapWindow hadn't been defined yet (I used window *parent). Is there some sort of forward declaration or other way to deal with this?

[Ionic Wind Support Team]

Not yet.  But window or even just POINTER would have worked.