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[Win32, C++] Popup window position!

General and Gameplay Programming Programming

Started by mind in a box August 21, 2010 06:50 PM

6 comments, last by LessBread 13 years, 8 months ago

mind in a box

887

Author

August 21, 2010 06:50 PM

Hi,
I recently stumbled over a problem that is bogging me from time to time:

The black rectangle will be a button later, it's just a placeholder for now.
The problem is the new window I create for showing the options the button provides. I just don't know how to position it under my "button"! Currently it lays over the left half of my "button". It is supposed to be right under it.

Right now I use this code:

void SF_PopupControl::RepositionWindow(){	D3DXVECTOR2 AbsPos;	GetAbsolutePosition(&AbsPos);	RECT r;	GetWindowRect(D2DObjects->RenderTarget->GetHwnd(),&r);	SetWindowPos(Popup.GetHWND(),HWND_TOP,AbsPos.x+r.left,AbsPos.y+r.top+ItemSize.y,0,0,SWP_NOSIZE);}

But since GetWindowRect includes the window's frame, this can't work and produces the output I've shown above.

Making the popup a child won't work either, because then it starts to fight with Direct2D.

D3D11-Renderer for Gothic I&II

TTK-Bandit

120

August 21, 2010 08:04 PM

well HWND_TOP sends the window to the top, you might wanna change that, or send the button to the top afterwards.
or if your z-order is correct at startup, just add SWP_NOZORDER to the flags.

mind in a box

887

Author

August 21, 2010 09:24 PM

Quote:
well HWND_TOP sends the window to the top, you might wanna change that, or send the button to the top afterwards.
or if your z-order is correct at startup, just add SWP_NOZORDER to the flags.

The Button is drawn using Direct2D with my own GUI-System. The only "real" window is the window of the Popup.

However! This is not my problem. My problem is, that I can't position the popup's window right.

(The window must go over the bounds of the other windows, so making it a child won't work either)

D3D11-Renderer for Gothic I&II

LessBread

1,415

August 21, 2010 10:47 PM

If GetWindowRect doesn't work for you, have you tried GetClientRect?

Which window is D2DObjects->RenderTarget->GetHwnd()?

Have you confirmed that all units in the addition are the same units?

AbsPos.x+r.left, AbsPos.y+r.top+ItemSize.y, 0,0

Have you considered using a popup menu instead?

For example:

    case WM_CONTEXTMENU:        {            HMENU hmenu = LoadMenu(GetModuleHandle(NULL), "context");            HMENU hsub  = GetSubMenu(hmenu, 0);            SetForegroundWindow(hwnd);            TrackPopupMenuEx(hsub,                    TPM_LEFTALIGN | TPM_TOPALIGN | TPM_LEFTBUTTON,                    LOWORD(lparam), HIWORD(lparam), hwnd, NULL);            DestroyMenu(hsub);            DestroyMenu(hmenu);        }        return 0;

"I thought what I'd do was, I'd pretend I was one of those deaf-mutes." - the Laughing Man

mind in a box

887

Author

August 22, 2010 07:05 AM

Quote:
If GetWindowRect doesn't work for you, have you tried GetClientRect?

GetClientRect() will not work for me as I don't need the client coordinates of the owning window.
The Popup window is it's own window, without any parent. Because of this I need something that gives me the client rect, but aligned to the left upper corner of the desktop.
GetWindowRect() gives a rectangle of the whole window, including title bar.

Quote:
Which window is D2DObjects->RenderTarget->GetHwnd()?

The one in the background with the black button.

Quote:
Have you confirmed that all units in the addition are the same units?

As I said above, I isolated the problem already. It's the fact that GetWindowRect() gives me everything, including title bar and stuff.

Quote:
Have you considered using a popup menu instead?

I would like to handle and draw this myself [smile]
It's just GetWindowRect() that needs to be replaced....

D3D11-Renderer for Gothic I&II

Endurion

5,545

August 23, 2010 01:17 AM

Sounds like you need to use GetClientRect and then ClientToScreen. Then you have the full screen coordinates of the client area (e.g. without borders and caption).

Fruny: Ftagn! Ia! Ia! std::time_put_byname! Mglui naflftagn std::codecvt eY'ha-nthlei!,char,mbstate_t>

unrealer2

100

August 23, 2010 09:07 AM

mind in a box told me: It works! Thank you :)

(he can not load the gamedev page at the moment :( )

LessBread

1,415

August 23, 2010 01:41 PM

Quote:Original post by mind in a box
Quote:
Have you considered using a popup menu instead?

I would like to handle and draw this myself [smile]

OK. Glad to hear that you've got it worked out.

Just for reference, you can draw your own menus too. See Using Menus: Creating Owner-Drawn Menu Items and Owner-Draw Menus.

"I thought what I'd do was, I'd pretend I was one of those deaf-mutes." - the Laughing Man

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