How to capture a mouse click outside a modal window?

[Squall_FF8 0]

Hi guys,

 

I have a modal window above my main form. I want to do something when I click outside the modal window. How I can do that?

I tried with MouseMove, but it returns <X,Y> as <-1,-1> when the cursor is outside the modal window.
Unfortunately that is not enough because, the same values are returned when you try to do things like resize,.. so there is no guarantee that <-1,-1> is what we need.
On top of that MouseUp/Down is not even triggered when you click outside. 

Edited Monday at 10:23 AM by Squall_FF8
more details

[PeaShooter_OMO 24]

Clicking outside the modal form will not register a mouse down, even through TApplicationEvents.OnMessage. I suspect you might have to use Windows System Hooks with WH_MOUSE. I have not done this before though and as such cannot confirm if this would be the most appropriate way to do it.

 

 

Edited Monday at 12:19 PM by PeaShooter_OMO

[Minox 8]

Try using "Mouse.CursorPos"

[limelect 51]

will this help?

 

 

 

function MouseHook (Code: integer; wParam: WPARAM; lParam: LPARAM): LRESULT; 
stdcall;
var
  ClientPt : TPoint;
begin
  {------------------------}
  { Handle Mouse Movements }
  {------------------------}
  if (GlobData <> nil) and
     (Code = HC_ACTION) and
     ((wParam = WM_MOUSEMOVE) or (wParam = WM_NCMOUSEMOVE)) then
  begin
    with PMouseHookStruct(lParam)^ do
    begin
      {-----------------------------}
      { Send the screen coordinates }
      {-----------------------------}
      PostMessage(GlobData^.ActiveHandle, WM_APP+2, Pt.X, Pt.Y);

      {-----------------------------}
      { Send the window coordinates }
      {-----------------------------}
      ClientPt := Pt;
      ScreenToClient(hwnd, ClientPt);
      PostMessage(GlobData^.ActiveHandle, WM_APP+3, ClientPt.X, ClientPt.Y);
    end;
  end;
  {-----------------------------------------------}
  { Call the next hook in the chain }
  {-----------------------------------------------}
  Result := CallNextHookEx(0, Code, wParam, lParam);
end;

function InstallMouseHook (Wnd: HWND): Boolean; stdcall;
begin
  Result := False;
  if (GlobData = nil) then Exit;
  if (GlobData^.THook = 0) then
  begin
    GlobData^.THook := SetWindowsHookEx(WH_MOUSE, @MouseHook, HInstance, 0);
    if GlobData^.THook = 0 then Exit;
  end;
  GlobData^.ActiveHandle := Wnd;
  Result := True;
end;

function UninstallMouseHook: Boolean; stdcall;
begin
  Result := True;
  if (GlobData = nil) then Exit;
  if (GlobData^.THook <> 0) then
  begin
    if not UnhookWindowsHookEx(GlobData^.THook) then Exit;
    GlobData^.THook = 0;
  end;
  GlobData^.ActiveHandle := 0;
  Result := True;
end;

 

[Der schöne Günther 325]

Can you narrow it down further if the click you want to catch will be

1. Still inside your own application
2. Outside of your application, causing it to lose focus
3. If mouse coordinates matter of you're just interested that a click happened

Edited 6 hours ago by Der schöne Günther

[limelect 51]

I have this project mite help

you catch the outside mouse hop it help

 

MyWindowsInspector.zip

[Squall_FF8 0]

5 hours ago, Der schöne Günther said:

Can you narrow it down further if the click you want to catch will be

1. Still inside your own application
2. Outside of your application, causing it to lose focus
3. If mouse coordinates matter of you're just interested that a click happened

Good questions!
I'm interested only to signal, that mouse was clicked outside the modal window. Most likely outside click will be inside the application (usually maximized), but even if it looses the focus I dont need to react.