msessions
asked on
modeless forms and popup windows
i have a modeless form that is created from my main form. i've noticed something that i don't unserstand and i thought you guys might be able to help me out. after i create my modeless form from my mainform and then generate a messagedlg popup or some other popup window from my modeless form, my modeless form is sent to back behind any other windows open on my desktop..usually mainform. if i minimize all windows except my modeless form and generate a popup window, everything looks fine. is there a z-order issue here with my app's forms? i need for the modeless form to be just behind the popup windows and not be "sent to back" behind all other windows. basically i want the same "look and feel" that i would expect from a modal form except that i have modeless. thanks to all who respond.
kretzschmar
what means modeless?
ASKER
sorry. poor choice of words. when i say modeless i mean non-modal.
can you show, how you create the "modeless" form
and how you call your popup-window?
and how you call your popup-window?
ASKER
from my mainform i create my non-modal form with this code. "Id" is just the form Id that i assign to tag to keep track of what forms are open and what forms need to be created:
procedure TfrmMain.ShowOrCreateForm(
var
frmindex: Integer;
Found: Boolean;
aForm: TfrmTicket;
begin
{Initialize the Variables}
Found := False;
aForm := nil;
{Loop over all forms of the application }
for frmindex := 0 to Pred(screen.FormCount) do
begin
{ Check if the form already exists by looking at its tag which was assigned an ID on creation}
if Screen.Forms[frmindex] is TfrmTicket then
if Screen.Forms[frmindex].Tag
begin
{ If so, assign it }
aForm := TfrmTicket(Screen.Forms[fr
Found := True;
end;
end;
{If a form of our formclass was not found, create it}
if (Not Found) then
begin
try
aForm := TfrmTicket.Create(self);
except
MessageDlg('Cannot create form for this user action. Please contact TTS support.', mtError,[mbOK],0);
exit;
end;
end;
{If a form of our formclass was found, show it}
if (Assigned(aForm)) then
with aForm do
begin
//assign Ticket ID to form tag
Tag := dmTTS.TicketID;
Show;
if WindowState = wsMinimized then
WindowState := wsNormal;
BringToFront;
end;
end;
form save from my non-modal form. the messagedlg 'Save changes?' causes the "problem" that i'm seeing:
function TfrmTicket.DoFormClose:boo
begin
result := false;
if (spTicket.state in [dsInsert,dsEdit]) then
if MessageDlg('Save Changes?',mtConfirmation,[
begin
if DoSave then
begin
OK2Close := True;
result := true;
end
else
begin
end;
end
else
begin
spTicket.CancelUpdates;
if RecInserted and (dmTTS.TicketID > 0) then
begin
dmTTS.spDeleteTicket.Param
dmTTS.spDeleteTicket.ExecP
end;
OK2Close := True;
result := true;
exit;
end
else
begin
OK2Close := True;
result := true;
end;
end;
procedure TfrmMain.ShowOrCreateForm(
var
frmindex: Integer;
Found: Boolean;
aForm: TfrmTicket;
begin
{Initialize the Variables}
Found := False;
aForm := nil;
{Loop over all forms of the application }
for frmindex := 0 to Pred(screen.FormCount) do
begin
{ Check if the form already exists by looking at its tag which was assigned an ID on creation}
if Screen.Forms[frmindex] is TfrmTicket then
if Screen.Forms[frmindex].Tag
begin
{ If so, assign it }
aForm := TfrmTicket(Screen.Forms[fr
Found := True;
end;
end;
{If a form of our formclass was not found, create it}
if (Not Found) then
begin
try
aForm := TfrmTicket.Create(self);
except
MessageDlg('Cannot create form for this user action. Please contact TTS support.', mtError,[mbOK],0);
exit;
end;
end;
{If a form of our formclass was found, show it}
if (Assigned(aForm)) then
with aForm do
begin
//assign Ticket ID to form tag
Tag := dmTTS.TicketID;
Show;
if WindowState = wsMinimized then
WindowState := wsNormal;
BringToFront;
end;
end;
form save from my non-modal form. the messagedlg 'Save changes?' causes the "problem" that i'm seeing:
function TfrmTicket.DoFormClose:boo
begin
result := false;
if (spTicket.state in [dsInsert,dsEdit]) then
if MessageDlg('Save Changes?',mtConfirmation,[
begin
if DoSave then
begin
OK2Close := True;
result := true;
end
else
begin
end;
end
else
begin
spTicket.CancelUpdates;
if RecInserted and (dmTTS.TicketID > 0) then
begin
dmTTS.spDeleteTicket.Param
dmTTS.spDeleteTicket.ExecP
end;
OK2Close := True;
result := true;
exit;
end
else
begin
OK2Close := True;
result := true;
end;
end;
ASKER
i think that if you build a simple sample delphi app and create a non-modal form from your mainform and then pop down a button on your non-modal form that calls a messagedlg then you'll see what i'm talking about. make sure you don't minimize mainform. open up a couple of other apps like Word, outlook, etc. before you do this. this should give you some idea what i'm seeing. thanks.
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ASKER
that seemed to work. what about other controls that take focus away from this non-modal form. is their a more general solution? for example, i have a grid that has a lookup column that when the user click to drop down the list item it display another grid(devexpress quantum grid). when the lookup column list item grid is displayed i'm seeing the same thing with the message dialog pop-up windows. thanks.