597 lines
15 KiB
Plaintext
597 lines
15 KiB
Plaintext
|
unit uFormMonitor;
|
||
|
|
|
||
|
|
interface
|
||
|
|
|
||
|
|
uses
|
||
|
|
SysUtils, Forms, Classes, Windows, Messages, ExtCtrls, Contnrs, DateUtils;
|
||
|
|
|
||
|
|
procedure SetFormMonitoring(activate: boolean);
|
||
|
|
|
||
|
|
procedure MarkFormAsStayOnTop(Form: TForm; IsStayOnTop: Boolean);
|
||
|
|
|
||
|
|
// Some forms have display tasks when first displayed that are messed up by the
|
||
|
|
// form monitor - such as making a combo box automatically drop down. These forms
|
||
|
|
// should call FormMonitorBringToFrontEvent, which will be called when the
|
||
|
|
// form monitor calls the form's BringToFront method. The Seconds parameter is the
|
||
|
|
// amount of time that must transpire before the form monitor will call
|
||
|
|
// BringToFront again, unless another form has received focus since the event was called.
|
||
|
|
|
||
|
|
procedure FormMonitorBringToFrontEvent(Form: TForm; AEvent: TNotifyEvent; Seconds: integer = 3);
|
||
|
|
|
||
|
|
implementation
|
||
|
|
|
||
|
|
type
|
||
|
|
TFormMonitor = class
|
||
|
|
private
|
||
|
|
FOldActiveFormChangeEvent: TNotifyEvent;
|
||
|
|
FOldActivateEvent: TNotifyEvent;
|
||
|
|
FOldRestore: TNotifyEvent;
|
||
|
|
FModifyingZOrder: boolean;
|
||
|
|
FModifyPending: boolean;
|
||
|
|
FActiveForm: TForm;
|
||
|
|
FZOrderHandles: TList;
|
||
|
|
FLastModal: boolean;
|
||
|
|
fTopOnList: TList;
|
||
|
|
fTopOffList: TList;
|
||
|
|
fTimer: TTimer;
|
||
|
|
FTimerCount: integer;
|
||
|
|
FMenuPending: boolean;
|
||
|
|
FWindowsHook: HHOOK;
|
||
|
|
FRunning: boolean;
|
||
|
|
FFormEvents: TObjectList;
|
||
|
|
FLastActiveFormHandle: HWND;
|
||
|
|
procedure ManageForms;
|
||
|
|
function FormValid(form: TForm): boolean;
|
||
|
|
function HandleValid(handle: HWND): boolean;
|
||
|
|
procedure MoveOnTop(Handle: HWND);
|
||
|
|
procedure MoveOffTop(Handle: HWND);
|
||
|
|
procedure Normalize(Handle: HWND; Yes: boolean);
|
||
|
|
procedure NormalizeReset;
|
||
|
|
function IsNormalized(Handle: HWND): boolean;
|
||
|
|
function GetActiveFormHandle: HWND;
|
||
|
|
procedure StartZOrdering;
|
||
|
|
function SystemRunning: boolean;
|
||
|
|
function ModalDelphiForm: boolean;
|
||
|
|
function IsTopMost(Handle: HWND): boolean;
|
||
|
|
public
|
||
|
|
procedure Start;
|
||
|
|
procedure Stop;
|
||
|
|
procedure Timer(Sender: TObject);
|
||
|
|
procedure Activate(Sender: TObject);
|
||
|
|
procedure ActiveFormChange(Sender: TObject);
|
||
|
|
procedure Restore(Sender: TObject);
|
||
|
|
end;
|
||
|
|
|
||
|
|
TFormEvent = class(TObject)
|
||
|
|
private
|
||
|
|
FForm: TForm;
|
||
|
|
FEvent: TNotifyEvent;
|
||
|
|
FSeconds: integer;
|
||
|
|
FTimeStamp: TDateTime;
|
||
|
|
end;
|
||
|
|
|
||
|
|
var
|
||
|
|
FormMonitor: TFormMonitor = nil;
|
||
|
|
|
||
|
|
type
|
||
|
|
HDisableGhostProc = procedure(); stdcall;
|
||
|
|
|
||
|
|
const
|
||
|
|
NORMALIZED = $00000001;
|
||
|
|
UN_NORMALIZED = $FFFFFFFE;
|
||
|
|
STAY_ON_TOP = $00000002;
|
||
|
|
NORMAL_FORM = $FFFFFFFD;
|
||
|
|
|
||
|
|
|
||
|
|
procedure DisableGhosting;
|
||
|
|
const
|
||
|
|
DisableProc = 'DisableProcessWindowsGhosting';
|
||
|
|
UserDLL = 'user32.dll';
|
||
|
|
|
||
|
|
var
|
||
|
|
DisableGhostProc: HDisableGhostProc;
|
||
|
|
User32Handle: THandle;
|
||
|
|
|
||
|
|
begin
|
||
|
|
User32Handle := LoadLibrary(PChar(UserDLL));
|
||
|
|
try
|
||
|
|
if User32Handle <= HINSTANCE_ERROR then
|
||
|
|
User32Handle := 0
|
||
|
|
else
|
||
|
|
begin
|
||
|
|
DisableGhostProc := GetProcAddress(User32Handle, PChar(DisableProc));
|
||
|
|
if(assigned(DisableGhostProc)) then
|
||
|
|
begin
|
||
|
|
DisableGhostProc;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
finally
|
||
|
|
if(User32Handle <> 0) then
|
||
|
|
FreeLibrary(User32Handle);
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure SetFormMonitoring(activate: boolean);
|
||
|
|
var
|
||
|
|
running: boolean;
|
||
|
|
begin
|
||
|
|
running := assigned(FormMonitor);
|
||
|
|
if(activate <> running) then
|
||
|
|
begin
|
||
|
|
if(running) then
|
||
|
|
begin
|
||
|
|
FormMonitor.Stop;
|
||
|
|
FormMonitor.Free;
|
||
|
|
FormMonitor := nil;
|
||
|
|
end
|
||
|
|
else
|
||
|
|
begin
|
||
|
|
FormMonitor := TFormMonitor.Create;
|
||
|
|
FormMonitor.Start;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure MarkFormAsStayOnTop(Form: TForm; IsStayOnTop: Boolean);
|
||
|
|
var
|
||
|
|
Data: Longint;
|
||
|
|
begin
|
||
|
|
Data := GetWindowLong(Form.Handle, GWL_USERDATA);
|
||
|
|
if(IsStayOnTop) then
|
||
|
|
begin
|
||
|
|
Data := Data or STAY_ON_TOP;
|
||
|
|
SetWindowPos(Form.Handle, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE + SWP_NOSIZE);
|
||
|
|
end
|
||
|
|
else
|
||
|
|
begin
|
||
|
|
Data := Data and NORMAL_FORM;
|
||
|
|
SetWindowPos(Form.Handle, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE + SWP_NOSIZE);
|
||
|
|
end;
|
||
|
|
SetWindowLong(Form.Handle, GWL_USERDATA, Data);
|
||
|
|
end;
|
||
|
|
|
||
|
|
function FindFormEventIndex(Form: TForm): integer;
|
||
|
|
var
|
||
|
|
i: integer;
|
||
|
|
event: TFormEvent;
|
||
|
|
begin
|
||
|
|
Result := -1;
|
||
|
|
for i := 0 to FormMonitor.FFormEvents.Count-1 do
|
||
|
|
begin
|
||
|
|
event := TFormEvent(FormMonitor.FFormEvents[i]);
|
||
|
|
if(event.FForm = Form) then
|
||
|
|
begin
|
||
|
|
Result := i;
|
||
|
|
exit;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
function FindFormEvent(Form: TForm): TFormEvent;
|
||
|
|
var
|
||
|
|
idx: integer;
|
||
|
|
begin
|
||
|
|
idx := FindFormEventIndex(Form);
|
||
|
|
if(idx < 0) then
|
||
|
|
Result := nil
|
||
|
|
else
|
||
|
|
Result := TFormEvent(FormMonitor.FFormEvents[idx]);
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure FormMonitorBringToFrontEvent(Form: TForm; AEvent: TNotifyEvent; Seconds: integer);
|
||
|
|
var
|
||
|
|
event: TFormEvent;
|
||
|
|
idx: integer;
|
||
|
|
begin
|
||
|
|
event := FindFormEvent(Form);
|
||
|
|
if(assigned(AEvent)) then
|
||
|
|
begin
|
||
|
|
if(event = nil) then
|
||
|
|
begin
|
||
|
|
event := TFormEvent.Create;
|
||
|
|
event.FForm := Form;
|
||
|
|
event.FTimeStamp := 0;
|
||
|
|
FormMonitor.FFormEvents.Add(event);
|
||
|
|
end;
|
||
|
|
event.FEvent := AEvent;
|
||
|
|
event.FSeconds := Seconds;
|
||
|
|
end
|
||
|
|
else
|
||
|
|
if(event <> nil) then
|
||
|
|
begin
|
||
|
|
idx := FindFormEventIndex(Form);
|
||
|
|
FormMonitor.FFormEvents.Delete(idx);
|
||
|
|
// event.Free; - TObjectList frees object automatically
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
function IsFormStayOnTop(form: TForm): boolean;
|
||
|
|
begin
|
||
|
|
Result := (form.FormStyle = fsStayOnTop);
|
||
|
|
if(not Result) then
|
||
|
|
Result := ((GetWindowLong(Form.Handle, GWL_USERDATA) and STAY_ON_TOP) <> 0);
|
||
|
|
end;
|
||
|
|
|
||
|
|
{ TFormMonitor }
|
||
|
|
|
||
|
|
procedure TFormMonitor.Activate(Sender: TObject);
|
||
|
|
begin
|
||
|
|
if(Assigned(FOldActivateEvent)) then
|
||
|
|
FOldActivateEvent(Sender);
|
||
|
|
NormalizeReset;
|
||
|
|
StartZOrdering;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.ActiveFormChange(Sender: TObject);
|
||
|
|
begin
|
||
|
|
if(Assigned(FOldActiveFormChangeEvent)) then
|
||
|
|
FOldActiveFormChangeEvent(Sender);
|
||
|
|
StartZOrdering;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.Restore(Sender: TObject);
|
||
|
|
begin
|
||
|
|
if(Assigned(FOldRestore)) then
|
||
|
|
FOldRestore(Sender);
|
||
|
|
NormalizeReset;
|
||
|
|
StartZOrdering;
|
||
|
|
end;
|
||
|
|
|
||
|
|
function TFormMonitor.FormValid(form: TForm): boolean;
|
||
|
|
begin
|
||
|
|
Result := assigned(form);
|
||
|
|
if Result then
|
||
|
|
Result := (form.Parent = nil) and (form.ParentWindow = 0) and form.Visible and (form.Handle <> 0);
|
||
|
|
end;
|
||
|
|
|
||
|
|
function TFormMonitor.HandleValid(handle: HWND): boolean;
|
||
|
|
begin
|
||
|
|
Result := (handle <> 0);
|
||
|
|
if(Result) then
|
||
|
|
Result := IsWindow(handle) and IsWindowVisible(handle) and isWindowEnabled(handle);
|
||
|
|
end;
|
||
|
|
|
||
|
|
function FindWindowZOrder(Window: HWnd; Data: Longint): Bool; stdcall;
|
||
|
|
begin
|
||
|
|
if(IsWindow(Window) and IsWindowVisible(Window)) then
|
||
|
|
FormMonitor.FZOrderHandles.Add(Pointer(Window));
|
||
|
|
Result := True;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.ManageForms;
|
||
|
|
var
|
||
|
|
i, j: integer;
|
||
|
|
form: TForm;
|
||
|
|
formHandle, activeHandle: HWND;
|
||
|
|
modal, doCall: boolean;
|
||
|
|
event: TFormEvent;
|
||
|
|
|
||
|
|
begin
|
||
|
|
if(FModifyingZOrder) then exit;
|
||
|
|
if(not SystemRunning) then exit;
|
||
|
|
FModifyingZOrder := TRUE;
|
||
|
|
try
|
||
|
|
activeHandle := GetActiveFormHandle;
|
||
|
|
modal := ModalDelphiForm;
|
||
|
|
FZOrderHandles.Clear;
|
||
|
|
fTopOnList.Clear;
|
||
|
|
fTopOffList.Clear;
|
||
|
|
|
||
|
|
EnumThreadWindows(GetCurrentThreadID, @FindWindowZOrder, 0);
|
||
|
|
for i := 0 to FZOrderHandles.Count-1 do
|
||
|
|
begin
|
||
|
|
formHandle := HWND(FZOrderHandles[i]);
|
||
|
|
for j := 0 to Screen.FormCount-1 do
|
||
|
|
begin
|
||
|
|
form := Screen.Forms[j];
|
||
|
|
if(form.Handle = formHandle) then
|
||
|
|
begin
|
||
|
|
if formValid(form) and (form.Handle <> activeHandle) and IsFormStayOnTop(form) then
|
||
|
|
begin
|
||
|
|
if(modal and (not IsWindowEnabled(form.Handle))) then
|
||
|
|
fTopOffList.Add(Pointer(form.Handle))
|
||
|
|
else
|
||
|
|
fTopOnList.Add(Pointer(form.Handle));
|
||
|
|
end;
|
||
|
|
break;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
for i := fTopOffList.Count-1 downto 0 do
|
||
|
|
MoveOffTop(HWND(fTopOffList[i]));
|
||
|
|
for i := fTopOnList.Count-1 downto 0 do
|
||
|
|
MoveOnTop(HWND(fTopOnList[i]));
|
||
|
|
|
||
|
|
if(activeHandle <> 0) then
|
||
|
|
begin
|
||
|
|
if(assigned(FActiveForm)) then
|
||
|
|
begin
|
||
|
|
event := FindFormEvent(FActiveForm);
|
||
|
|
doCall := (event = nil);
|
||
|
|
if(not doCall) then
|
||
|
|
doCall := (activeHandle <> FLastActiveFormHandle);
|
||
|
|
if(not doCall) then
|
||
|
|
doCall := SecondsBetween(Now, event.FTimeStamp) > event.FSeconds;
|
||
|
|
if(doCall) then
|
||
|
|
begin
|
||
|
|
if IsFormStayOnTop(FActiveForm) then
|
||
|
|
begin
|
||
|
|
SetWindowPos(activeHandle, HWND_TOPMOST, 0, 0, 0, 0,
|
||
|
|
SWP_NOMOVE or SWP_NOSIZE);
|
||
|
|
Normalize(activeHandle, FALSE);
|
||
|
|
end;
|
||
|
|
FActiveForm.BringToFront;
|
||
|
|
if(event <> nil) then
|
||
|
|
begin
|
||
|
|
if(FormValid(event.FForm)) then
|
||
|
|
begin
|
||
|
|
event.FEvent(FActiveForm);
|
||
|
|
event.FTimeStamp := now;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
end
|
||
|
|
else
|
||
|
|
begin
|
||
|
|
if(activeHandle <> 0) then
|
||
|
|
begin
|
||
|
|
SetFocus(activeHandle);
|
||
|
|
BringWindowToTop(activeHandle);
|
||
|
|
if(IsTopMost(activeHandle)) then
|
||
|
|
SetWindowPos(activeHandle, HWND_TOPMOST, 0, 0, 0, 0,
|
||
|
|
SWP_NOMOVE or SWP_NOSIZE);
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
FLastActiveFormHandle := activeHandle;
|
||
|
|
finally
|
||
|
|
FModifyingZOrder := FALSE;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
function CallWndHook(Code: Integer; WParam: wParam; Msg: PCWPStruct): Longint; stdcall;
|
||
|
|
begin
|
||
|
|
case Msg.message of
|
||
|
|
WM_INITMENU, WM_INITMENUPOPUP, WM_ENTERMENULOOP:
|
||
|
|
FormMonitor.FMenuPending := TRUE;
|
||
|
|
WM_MENUSELECT, WM_EXITMENULOOP:
|
||
|
|
FormMonitor.FMenuPending := FALSE;
|
||
|
|
end;
|
||
|
|
Result := CallNextHookEx(FormMonitor.FWindowsHook, Code, WParam, Longint(Msg));
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.Start;
|
||
|
|
begin
|
||
|
|
if(FRunning) then exit;
|
||
|
|
FRunning := TRUE;
|
||
|
|
FTimer := TTimer.Create(Application);
|
||
|
|
fTimer.Enabled := FALSE;
|
||
|
|
FTimer.OnTimer := Timer;
|
||
|
|
FTimer.Interval := 10;
|
||
|
|
FMenuPending := FALSE;
|
||
|
|
FLastActiveFormHandle := 0;
|
||
|
|
|
||
|
|
FZOrderHandles := TList.Create;
|
||
|
|
fTopOnList := TList.Create;
|
||
|
|
fTopOffList := TList.Create;
|
||
|
|
FFormEvents := TObjectList.Create;
|
||
|
|
FModifyingZOrder := false;
|
||
|
|
FLastModal := false;
|
||
|
|
FOldActiveFormChangeEvent := Screen.OnActiveFormChange;
|
||
|
|
Screen.OnActiveFormChange := ActiveFormChange;
|
||
|
|
FOldActivateEvent := Application.OnActivate;
|
||
|
|
Application.OnActivate := Activate;
|
||
|
|
FOldRestore := Application.OnRestore;
|
||
|
|
Application.OnRestore := Restore;
|
||
|
|
FWindowsHook := SetWindowsHookEx(WH_CALLWNDPROC, @CallWndHook, 0, GetCurrentThreadID)
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.Stop;
|
||
|
|
begin
|
||
|
|
if(not FRunning) then exit;
|
||
|
|
FRunning := FALSE;
|
||
|
|
if FWindowsHook <> 0 then
|
||
|
|
begin
|
||
|
|
UnHookWindowsHookEx(FWindowsHook);
|
||
|
|
FWindowsHook := 0;
|
||
|
|
end;
|
||
|
|
Screen.OnActiveFormChange := FOldActiveFormChangeEvent;
|
||
|
|
Application.OnActivate := FOldActivateEvent;
|
||
|
|
Application.OnRestore := FOldRestore;
|
||
|
|
|
||
|
|
FZOrderHandles.Free;
|
||
|
|
fTopOnList.Free;
|
||
|
|
fTopOffList.Free;
|
||
|
|
FFormEvents.Free;
|
||
|
|
fTimer.Enabled := FALSE;
|
||
|
|
fTimer.Free;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.MoveOffTop(Handle: HWND);
|
||
|
|
begin
|
||
|
|
if(not IsNormalized(Handle)) then
|
||
|
|
begin
|
||
|
|
SetWindowPos(Handle, HWND_NOTOPMOST, 0, 0, 0, 0,
|
||
|
|
SWP_NOMOVE or SWP_NOSIZE or SWP_NOACTIVATE or SWP_NOOWNERZORDER);
|
||
|
|
Normalize(Handle, TRUE);
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.MoveOnTop(Handle: HWND);
|
||
|
|
begin
|
||
|
|
if(isNormalized(Handle)) then
|
||
|
|
begin
|
||
|
|
SetWindowPos(Handle, HWND_TOPMOST, 0, 0, 0, 0,
|
||
|
|
SWP_NOMOVE or SWP_NOSIZE or SWP_NOACTIVATE or SWP_NOOWNERZORDER);
|
||
|
|
Normalize(Handle, FALSE);
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.Normalize(Handle: HWND; Yes: boolean);
|
||
|
|
var
|
||
|
|
Data: Longint;
|
||
|
|
begin
|
||
|
|
Data := GetWindowLong(Handle, GWL_USERDATA);
|
||
|
|
if(yes) then
|
||
|
|
Data := Data or NORMALIZED
|
||
|
|
else
|
||
|
|
Data := Data and UN_NORMALIZED;
|
||
|
|
SetWindowLong(Handle, GWL_USERDATA, Data);
|
||
|
|
end;
|
||
|
|
|
||
|
|
function TFormMonitor.IsNormalized(Handle: HWND): boolean;
|
||
|
|
begin
|
||
|
|
Result := ((GetWindowLong(Handle, GWL_USERDATA) and NORMALIZED) <> 0);
|
||
|
|
end;
|
||
|
|
|
||
|
|
function TFormMonitor.IsTopMost(Handle: HWND): boolean;
|
||
|
|
begin
|
||
|
|
Result := ((GetWindowLong(Handle, GWL_EXSTYLE) and WS_EX_TOPMOST) <> 0);
|
||
|
|
end;
|
||
|
|
|
||
|
|
function FindWindows(Window: HWnd; Data: Longint): Bool; stdcall;
|
||
|
|
begin
|
||
|
|
FormMonitor.Normalize(Window, FALSE);
|
||
|
|
Result := True;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.NormalizeReset;
|
||
|
|
begin
|
||
|
|
EnumThreadWindows(GetCurrentThreadID, @FindWindows, 0);
|
||
|
|
end;
|
||
|
|
|
||
|
|
var
|
||
|
|
uActiveWindowHandle: HWND;
|
||
|
|
uActiveWindowCount: integer;
|
||
|
|
|
||
|
|
function IsHandleOK(Handle: HWND): boolean;
|
||
|
|
var
|
||
|
|
i: integer;
|
||
|
|
|
||
|
|
begin
|
||
|
|
Result := FALSE;
|
||
|
|
if(not formMonitor.HandleValid(Handle)) or (Handle = Application.Handle) then exit;
|
||
|
|
for i := 0 to Screen.FormCount-1 do
|
||
|
|
begin
|
||
|
|
if(Handle = Screen.Forms[i].Handle) then exit;
|
||
|
|
end;
|
||
|
|
Result := TRUE;
|
||
|
|
end;
|
||
|
|
|
||
|
|
function FindActiveWindow(Window: HWnd; Data: Longint): Bool; stdcall;
|
||
|
|
begin
|
||
|
|
Result := True;
|
||
|
|
if(IsHandleOK(Window)) then
|
||
|
|
begin
|
||
|
|
inc(uActiveWindowCount);
|
||
|
|
if(uActiveWindowCount = 1) then
|
||
|
|
uActiveWindowHandle := Window
|
||
|
|
else
|
||
|
|
if(uActiveWindowCount > 1) then
|
||
|
|
Result := false;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
function TFormMonitor.GetActiveFormHandle: HWND;
|
||
|
|
var
|
||
|
|
i: integer;
|
||
|
|
form: TForm;
|
||
|
|
|
||
|
|
begin
|
||
|
|
FActiveForm := Screen.ActiveForm;
|
||
|
|
if(assigned(FActiveForm)) then
|
||
|
|
Result := FActiveForm.Handle
|
||
|
|
else
|
||
|
|
Result := 0;
|
||
|
|
if(FormValid(FActiveForm) and IsWindowEnabled(FActiveForm.Handle)) then
|
||
|
|
exit;
|
||
|
|
for i := 0 to Screen.FormCount-1 do
|
||
|
|
begin
|
||
|
|
form := Screen.Forms[i];
|
||
|
|
if(form.Handle = Result) then
|
||
|
|
begin
|
||
|
|
if FormValid(form) and IsWindowEnabled(form.Handle) then
|
||
|
|
begin
|
||
|
|
FActiveForm := form;
|
||
|
|
Result := form.Handle;
|
||
|
|
exit;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
FActiveForm := nil;
|
||
|
|
Result := GetActiveWindow;
|
||
|
|
if(IsHandleOK(Result)) then exit;
|
||
|
|
uActiveWindowHandle := 0;
|
||
|
|
uActiveWindowCount := 0;
|
||
|
|
EnumThreadWindows(GetCurrentThreadID, @FindActiveWindow, 0);
|
||
|
|
if(uActiveWindowCount = 1) then
|
||
|
|
begin
|
||
|
|
Result := uActiveWindowHandle;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
|
||
|
|
procedure TFormMonitor.StartZOrdering;
|
||
|
|
begin
|
||
|
|
if(FModifyPending) then exit;
|
||
|
|
if(SystemRunning) then
|
||
|
|
begin
|
||
|
|
FModifyPending := TRUE;
|
||
|
|
FTimerCount := 0;
|
||
|
|
FTimer.Enabled := TRUE;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
|
||
|
|
function TFormMonitor.SystemRunning: boolean;
|
||
|
|
begin
|
||
|
|
Result := assigned(Application.MainForm) and
|
||
|
|
(Application.MainForm.Handle <> 0) and
|
||
|
|
IsWindowVisible(Application.MainForm.Handle);
|
||
|
|
end;
|
||
|
|
|
||
|
|
|
||
|
|
function TFormMonitor.ModalDelphiForm: boolean;
|
||
|
|
var
|
||
|
|
i: integer;
|
||
|
|
form: TForm;
|
||
|
|
begin
|
||
|
|
for i := 0 to Screen.FormCount-1 do
|
||
|
|
begin
|
||
|
|
form := screen.Forms[i];
|
||
|
|
if(FormValid(form) and (fsModal in form.FormState)) then
|
||
|
|
begin
|
||
|
|
Result := TRUE;
|
||
|
|
exit;
|
||
|
|
end;
|
||
|
|
end;
|
||
|
|
Result := FALSE;
|
||
|
|
end;
|
||
|
|
|
||
|
|
procedure TFormMonitor.Timer(Sender: TObject);
|
||
|
|
var
|
||
|
|
NoMenu: boolean;
|
||
|
|
begin
|
||
|
|
inc(FTimerCount);
|
||
|
|
if(FTimerCount > 20) then
|
||
|
|
begin
|
||
|
|
FTimer.Enabled := FALSE;
|
||
|
|
FMenuPending := FALSE;
|
||
|
|
FModifyPending := FALSE;
|
||
|
|
exit;
|
||
|
|
end;
|
||
|
|
if(FTimerCount <> 1) then exit;
|
||
|
|
FTimer.Enabled := FALSE;
|
||
|
|
NoMenu := not FMenuPending;
|
||
|
|
FMenuPending := FALSE;
|
||
|
|
if(NoMenu and SystemRunning) then
|
||
|
|
ManageForms;
|
||
|
|
FModifyPending := FALSE;
|
||
|
|
end;
|
||
|
|
|
||
|
|
initialization
|
||
|
|
DisableGhosting;
|
||
|
|
|
||
|
|
finalization
|
||
|
|
|
||
|
|
end.
|