is possible make click throught window?

[jdemaria22]

Hi guys, i'm trying to create a overlay with ebiten.

I use SetScreenTransparent() /SetWindowDecorated(false), to create a window transparent a undecorated.

I use SetWindowFloating(false) to hold up the window all the time.

I'ts posible to make click throught the window?

for example in C

https://stackoverflow.com/questions/39855720/windows-forms-pass-clicks-through-a-partially-transparent-always-on-top-window
Thanks

[hajimehoshi]

Unfortunately no so far. You can calculate this by CurrentPosition and WindowPosition and DeviceScaleFactor by yourself.

A problem of exposing the position though a window is that coordinate systems differ among OSes and it is tricky to offer an consistent way. (e.g. is the position affected by a zoom scale for Hi-DPI?)

[hajimehoshi]

Let's see SetWindowLongPtr's returning value and the error value.

[jdemaria22]

Okey,

I tried with the function SetWindowLong from win32api,

func SetWindowLong(hWnd HWND, index, value int32) (int32, error) {
ret, _, err := syscall.Syscall(setWindowLong.Addr(), 3,
uintptr(hWnd),
uintptr(index),
uintptr(value))
if ret == 0 {
return int32(ret), err
}
return int32(ret), nil
}

and my functión update

func (g *Game) Update() error {
fmt.Println("ok...")
if ebiten.IsKeyPressed(ebiten.KeyQ) {
if count == 0 {
yogur := win.FindWindow(nil, hook.StringToUTF16PtrElseNil("yogur"))
fmt.Println("call setWindowLong: ", yogur)
style := win.GetWindowLong(yogur, win.GWL_STYLE)
r, err := win.SetWindowLong(yogur, win.GWL_STYLE, style|win.WS_EX_LAYERED|win.WS_EX_TRANSPARENT)
if err != nil {
fmt.Println("error in setWindowLong: ", err, r)
}
fmt.Println("setWindowLong : ", r)
count++
}
}
return nil
}

and the same problem, and nathing logs affter the call the function. As if the process is waiting for the Syscall to return

[hajimehoshi]

What library are you using to call SetWindowLong?

Unfortunately I am not an expert of Win32API, so I might not be able to have a good answer. Sorry.

[jdemaria22]

I use https://github.com/lxn/win for win32api.

Also, thank you very much for help.

I will investigate more and tell you.

Thanksss

[jdemaria22]

Hi,
Problem solved using SetWindownLong affter create the ebiten window

wnd := win.FindWindow(nil, hook.StringToUTF16PtrElseNil(name))
r2, err := win.SetWindowLong(wnd, win.GWL_EXSTYLE, win.WS_EX_COMPOSITED|win.WS_EX_LAYERED|win.WS_EX_TRANSPARENT|win.WS_EX_TOOLWINDOW|win.WS_EX_TOPMOST)
if err != nil {
fmt.Println("error in setWindowLong: ", err, r2)
}

with this code, i make click throught the window

name -> is the name of the ebiten window.

Thanks!