MFC, Modal vs. Modeless dialog and controls not showing

Modal vs. Modeless dialog and controls not showing

Author	Message
Damien Cymb #1 / 5	Modal vs. Modeless dialog and controls not showing MFC newbie alert. There is probably a very simple solution to this but I've missed it to this point. I have a very simple dialog box containing 3 static text fields and 2 CProgressCtrl controls. I create the dialog and launch it modelessly via Create(IDD_NAME) and ShowWindow(SW_NORMAL). When the dialog comes up, none of the controls are visible. When I actually SetPos() for the progress ctrls latter on in processing, they show up. Also, if I SetWindowText() on the static text fields they will show as well. I want all controls to show from the get go, so I added this "set" code to the OnInitDialog() but it does not seem to have the desired effect. Only when I execute this code at some point after OnInitDialog() in some event handling will I see my controls suddenly appear. For testing, I created the dialog as modal via DoModal() and it comes up with all controls visible (note this is with no change to my actual dialog code, just changing the way the main app instantiates it). But I do need this to be modeless.
Tue, 18 Oct 2005 19:24:28 GMT

David Crow [MCSD #2 / 5	Modal vs. Modeless dialog and controls not showing I'm just guessing but would the WS_VISIBLE style, or lack thereof, have anything to do with this? Quote: > MFC newbie alert. There is probably a very simple solution to this > but I've missed it to this point. > I have a very simple dialog box containing 3 static text fields and 2 > CProgressCtrl controls. > I create the dialog and launch it modelessly via Create(IDD_NAME) and > ShowWindow(SW_NORMAL). When the dialog comes up, none of the controls > are visible. When I actually SetPos() for the progress ctrls latter > on in processing, they show up. Also, if I SetWindowText() on the > static text fields they will show as well. I want all controls to > show from the get go, so I added this "set" code to the OnInitDialog() > but it does not seem to have the desired effect. Only when I execute > this code at some point after OnInitDialog() in some event handling > will I see my controls suddenly appear. > For testing, I created the dialog as modal via DoModal() and it comes > up with all controls visible (note this is with no change to my actual > dialog code, just changing the way the main app instantiates it). But > I do need this to be modeless.
Tue, 18 Oct 2005 20:11:34 GMT

Joseph M. Newcome #3 / 5	Modal vs. Modeless dialog and controls not showing Generally, it is easiest to get into the habit of doing Create(Classname::IDD) rather than having to look up the class name each time. The enumeration value IDD is always set to the correct name for the class. I've never seen a failure mode like this, and I do a lot of modeless dialog boxes. You must be doing something really odd. joe Quote: >MFC newbie alert. There is probably a very simple solution to this >but I've missed it to this point. >I have a very simple dialog box containing 3 static text fields and 2 >CProgressCtrl controls. >I create the dialog and launch it modelessly via Create(IDD_NAME) and >ShowWindow(SW_NORMAL). When the dialog comes up, none of the controls >are visible. When I actually SetPos() for the progress ctrls latter >on in processing, they show up. Also, if I SetWindowText() on the >static text fields they will show as well. I want all controls to >show from the get go, so I added this "set" code to the OnInitDialog() >but it does not seem to have the desired effect. Only when I execute >this code at some point after OnInitDialog() in some event handling >will I see my controls suddenly appear. >For testing, I created the dialog as modal via DoModal() and it comes >up with all controls visible (note this is with no change to my actual >dialog code, just changing the way the main app instantiates it). But >I do need this to be modeless. Joseph M. Newcomer [MVP] Web: http://www.flounder.com MVP Tips: http://www.flounder.com/mvp_tips.htm
Tue, 18 Oct 2005 20:30:42 GMT

Jay Nabonn #4 / 5	Modal vs. Modeless dialog and controls not showing Quote: > MFC newbie alert. There is probably a very simple solution to this > but I've missed it to this point. > I have a very simple dialog box containing 3 static text fields and 2 > CProgressCtrl controls. > I create the dialog and launch it modelessly via Create(IDD_NAME) and > ShowWindow(SW_NORMAL). When the dialog comes up, none of the controls > are visible. When I actually SetPos() for the progress ctrls latter > on in processing, they show up. Also, if I SetWindowText() on the > static text fields they will show as well. I want all controls to > show from the get go, so I added this "set" code to the OnInitDialog() > but it does not seem to have the desired effect. Only when I execute > this code at some point after OnInitDialog() in some event handling > will I see my controls suddenly appear. > For testing, I created the dialog as modal via DoModal() and it comes > up with all controls visible (note this is with no change to my actual > dialog code, just changing the way the main app instantiates it). But > I do need this to be modeless. This sounds like a progress dialog. Are you getting back to a message loop anytime soon? If not, the controls may not be getting their paint messages. If so, you could try forcing the update yourself. (e.g. RedrawWindow(GetSafeHandle(), NULL, NULL, RDW_UPDATENOW \| RDW_ALLCHILDREN); maybe with RDW_INVALIDATE also) HTH Jay
Tue, 18 Oct 2005 20:49:00 GMT

Damien Cymb #5 / 5	Modal vs. Modeless dialog and controls not showing This is indeed a progress dialog. It looked to me like I was getting back into the message loop, but I tried your suggestion anyway but it had no effect. I did find a solution to this, although I am not sure why it works. If anyone can explain I'd be interested just out of curiosity. Actually, there where 2 solutions. I found some other code that showed a progress dialog and these were the differences and in fact they did make the difference. (1) My original code launched the dialog like this from the main window: ProgressDlg* prog = new ProgressDlg(this); prog->Create(IDD_PROGRESS); prog->ShowWindow(SW_NORMAL); The code I found had the ShowWindow() call in the OnInitDialog() itself. When I did this, my static text fields showed up immediately but still no progress controls. (2) Also in OnInitDialog() of the code I found was: // Have to do this twice to get progress bar to display m_prog.SetPos(1); m_prog.SetPos(0); I added this to my OnInitDialog() and poof, my progress controls showed up immediately as well. Quote: > This sounds like a progress dialog. Are you getting back to a message loop > anytime soon? If not, the controls may not be getting their paint messages. > If so, you could try forcing the update yourself. (e.g. > RedrawWindow(GetSafeHandle(), NULL, NULL, RDW_UPDATENOW \| RDW_ALLCHILDREN); > maybe with RDW_INVALIDATE also) > HTH > Jay
Fri, 21 Oct 2005 14:41:58 GMT

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