Window above the screen

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Overclick

Joined: 11 Jul 2020
Posts: 669
Location: Ukraine

Overclick 20 May 2022, 05:17

Hi
I move window by SC_DRAGMOVE but then it checks itself for some allowed space. If window's header plased above the screen it replaces window down to shure it's on the screen. But I don't need it. I tried to hook
WM_WINDOWPOSCHANGED
WM_MOVE
WM_WINDOWPOSCHANGING
WM_CAPTURECHANGED
WM_NCCALCSIZE
Also tried to manage WM_GETMINMAXINFO
No luck. If I move window by SetWindowPos it placed where I wandt with no problems. But I still want to use SC_DRAGMOVE. Where can I disable that checking?

20 May 2022, 05:17

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20303
Location: In your JS exploiting you and your system

revolution 20 May 2022, 09:06

Windows has never allowed that.

Your option is to handle the mouse move message yourself and position the Window yourself.

BTW: It is the same for many of the Linux window managers also. There is a lot of resistance to allowing the user to push the window off the screen without some special settings or keystrokes. But manual positioning still works if the app really needs to do it.

20 May 2022, 09:06

macomics

Joined: 26 Jan 2021
Posts: 928
Location: Russia

macomics 20 May 2022, 13:25

It is unclear why this is necessary at all. Isn't it easier to hide the window when it goes beyond the screen boundaries?

If you want the title to be displayed on the panel, then just set aplha to 0.

Quote:

SetLayeredWindowAttributes(hwnd, 0, 0, LWA_ALPHA);
SetWindowLong(hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) or or WS_EX_LAYRED);

20 May 2022, 13:25

Overclick

Joined: 11 Jul 2020
Posts: 669
Location: Ukraine

Overclick 20 May 2022, 14:08

My window does not have the title at all But it have transparen background for different sort of animation layers above it.
I was thinking about switches or cutters or separate windows But all of them is looking too choppy and makes additional resizing headache.
It is not big deal to manage mouse moving instead

20 May 2022, 14:08

Hrstka

Joined: 05 May 2008
Posts: 56
Location: Czech republic

Hrstka 20 May 2022, 15:27

Do you call DefWindowProc in handling WM_WINDOWPOSCHANGING and WM_WINDOWPOSCHANGED messages?

20 May 2022, 15:27

Overclick

Joined: 11 Jul 2020
Posts: 669
Location: Ukraine

Overclick 20 May 2022, 15:53

Quote:

Do you call DefWindowProc in handling WM_WINDOWPOSCHANGING and WM_WINDOWPOSCHANGED messages?

Do I need it?

20 May 2022, 15:53

Overclick

Joined: 11 Jul 2020
Posts: 669
Location: Ukraine

Overclick 21 May 2022, 07:04

I give up with SC_DRAGMOVE. My own manager works perfect.

Code:

.dragwindow:
        invoke  SetCapture,[hWnd]
        mov             [GuiLbuttonStatus],1
        mov             [GuiLbuttonUp],.dragwindow.end
        mov             [GuiLbuttonContinueDown],.dragwindow.continue
        invoke  GetCursorPos,MouseTrackOld
        invoke  GetWindowRect,[hWnd],GuiDragwindowRect
        xor             rax,rax
        ret
        .dragwindow.continue:
                invoke  GetCursorPos,MouseTrack
                mov             r8d,[MouseTrack.x]
                mov             r9d,[MouseTrack.y]
                sub             r8d,[MouseTrackOld.x]
                sub             r9d,[MouseTrackOld.y]
                add             r8d,[GuiDragwindowRect.left]
                add             r9d,[GuiDragwindowRect.top]
                invoke  SetWindowPos,[hWnd],0,r8,r9,0,0,\
                                SWP_SHOWWINDOW or SWP_NOSIZE
                xor             rax,rax
                ret
        .dragwindow.end:
                mov             [GuiLbuttonStatus],0
                invoke  ReleaseCapture
                xor             rax,rax
                ret

21 May 2022, 07:04

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