Create and Destroy Dialog
Ich can have a problem with destroying an dialog.
I use the following code:
void CTestPhasePPMDlg::OnBnClickedButtonStartOutput()
{
if (theApp.m_pDlgPhaseOutput != NULL) {
theApp.m_pDlgPhaseOutput->SetForegroundWindow();
theApp.m_pDlgPhaseOutput->SetFocus();
}
else {
theApp.m_pDlgPhaseOutput = new CDlgPhaseOutput;
theApp.m_pDlgPhaseOutput->Create(CDlgPhaseOutput::IDD);
// Ausgabe initialisieren
theApp.m_pDlgPhaseOutput->ShowWindow(SW_SHOW);
}
}
void CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
{
if (theApp.m_pDlgPhaseOutput != NULL)
{
theApp.m_pDlgPhaseOutput->DestroyWindow();
delete theApp.m_pDlgPhaseOutput;
}
}
It does show the dialog.
I also does destroy the dialog with the second button.
However if I then call the first function the application fails.
The problem is that after CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
the pointer theApp.m_pDlgPhaseOutput is NOT Null.
Am I doing something principle wrong ?
Matthias
matthias791
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"Matthias Pospiech" wrote:
> Ich can have a problem with destroying an dialog.
> I use the following code:
>
> void CTestPhasePPMDlg::OnBnClickedButtonStartOutput()
> {
>
> if (theApp.m_pDlgPhaseOutput != NULL) {
> theApp.m_pDlgPhaseOutput->SetForegroundWindow();
> theApp.m_pDlgPhaseOutput->SetFocus();
> }
> else {
> theApp.m_pDlgPhaseOutput = new CDlgPhaseOutput;
> theApp.m_pDlgPhaseOutput->Create(CDlgPhaseOutput::IDD);
> // Ausgabe initialisieren
> theApp.m_pDlgPhaseOutput->ShowWindow(SW_SHOW);
> }
> }
>
> void CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
> {
> if (theApp.m_pDlgPhaseOutput != NULL)
> {
> theApp.m_pDlgPhaseOutput->DestroyWindow();
> delete theApp.m_pDlgPhaseOutput;
> }
> }
>
> It does show the dialog.
> I also does destroy the dialog with the second button.
> However if I then call the first function the application fails.
> The problem is that after CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
> the pointer theApp.m_pDlgPhaseOutput is NOT Null.
>
> Am I doing something principle wrong ?
>
> Matthias
>
delete theApp.m_pDlgPhaseOutput;
theApp.m_pDlgPhaseOutput = NULL;
And in general, after deleting a pointer set it NULL to avoid further
headaches.
--
======
Arman
armancho_x1"Matthias Pospiech" <matthias79@gmx.de> wrote in message
news:f04fb8$jmp$1@newsserver.rrzn.uni-hannover.de...
> Ich can have a problem with destroying an dialog.
> I use the following code:
>
> void CTestPhasePPMDlg::OnBnClickedButtonStartOutput()
> {
>
> if (theApp.m_pDlgPhaseOutput != NULL) {
> theApp.m_pDlgPhaseOutput->SetForegroundWindow();
> theApp.m_pDlgPhaseOutput->SetFocus();
> }
> else { theApp.m_pDlgPhaseOutput = new CDlgPhaseOutput;
> theApp.m_pDlgPhaseOutput->Create(CDlgPhaseOutput::IDD); // Ausgabe
> initialisieren theApp.m_pDlgPhaseOutput->ShowWindow(SW_SHOW); } }
>
> void CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
> {
> if (theApp.m_pDlgPhaseOutput != NULL)
> {
> theApp.m_pDlgPhaseOutput->DestroyWindow();
> delete theApp.m_pDlgPhaseOutput;
> }
> }
>
> It does show the dialog.
> I also does destroy the dialog with the second button.
> However if I then call the first function the application fails.
> The problem is that after CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
> the pointer theApp.m_pDlgPhaseOutput is NOT Null.
>
> Am I doing something principle wrong ?
>
You need to add
theApp.mPDlgPhaseOutput = NULL;
after deleting it in ONBnClickedButtonEndOutput().
-- David
dc2983A pointer will not be "null'd" out for you automatically. The problem here
is tha tyou are checking to see if the pointer (m_pDlgPhaseOutput) is NULL
indicating that it is not showing at the time. Then when you destroy it you
don't set the point to NULL so the next time that test fails. You will also
want to set the pointer to NULL to initialize it as well.
Alternatively, you could choose not to destroy the window and just hide it
until you need it again. Then you would destroy it when you program is
closing like in the OnClose() function in your mainframe. It all depends on
how often you use the window.
Tom
"Matthias Pospiech" <matthias79@gmx.de> wrote in message
news:f04fb8$jmp$1@newsserver.rrzn.uni-hannover.de...
> Ich can have a problem with destroying an dialog.
> I use the following code:
>
> void CTestPhasePPMDlg::OnBnClickedButtonStartOutput()
> {
>
> if (theApp.m_pDlgPhaseOutput != NULL) {
> theApp.m_pDlgPhaseOutput->SetForegroundWindow();
> theApp.m_pDlgPhaseOutput->SetFocus();
> }
> else { theApp.m_pDlgPhaseOutput = new CDlgPhaseOutput;
> theApp.m_pDlgPhaseOutput->Create(CDlgPhaseOutput::IDD); // Ausgabe
> initialisieren theApp.m_pDlgPhaseOutput->ShowWindow(SW_SHOW); } }
>
> void CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
> {
> if (theApp.m_pDlgPhaseOutput != NULL)
> {
> theApp.m_pDlgPhaseOutput->DestroyWindow();
> delete theApp.m_pDlgPhaseOutput;
> }
> }
>
> It does show the dialog.
> I also does destroy the dialog with the second button.
> However if I then call the first function the application fails.
> The problem is that after CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
> the pointer theApp.m_pDlgPhaseOutput is NOT Null.
>
> Am I doing something principle wrong ?
>
> Matthias
tom.nospamOI'm curious why the app is involved in this transaction at all.
You should not do the delete where you do it. You should do that in the PostNcDestroy
handler. You can then post a message telling the owner of the dialog that the dialog is
gone.
I fail to see why the app gets into the picture at all.
joe
On Wed, 18 Apr 2007 08:54:47 +0200, Matthias Pospiech <matthias79@gmx.de> wrote:
>Ich can have a problem with destroying an dialog.
>I use the following code:
>
>void CTestPhasePPMDlg::OnBnClickedButtonStartOutput()
>{
>
> if (theApp.m_pDlgPhaseOutput != NULL) {
> theApp.m_pDlgPhaseOutput->SetForegroundWindow();
> theApp.m_pDlgPhaseOutput->SetFocus();
> }
> else {
> theApp.m_pDlgPhaseOutput = new CDlgPhaseOutput;
> theApp.m_pDlgPhaseOutput->Create(CDlgPhaseOutput::IDD);
> // Ausgabe initialisieren
> theApp.m_pDlgPhaseOutput->ShowWindow(SW_SHOW);
> }
>}
>
>void CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
>{
> if (theApp.m_pDlgPhaseOutput != NULL)
> {
> theApp.m_pDlgPhaseOutput->DestroyWindow();
> delete theApp.m_pDlgPhaseOutput;
> }
>}
>
>It does show the dialog.
>I also does destroy the dialog with the second button.
>However if I then call the first function the application fails.
>The problem is that after CTestPhasePPMDlg::OnBnClickedButtonEndOutput()
>the pointer theApp.m_pDlgPhaseOutput is NOT Null.
>
>Am I doing something principle wrong ?
>
>Matthias
Joseph M. Newcomer [MVP]
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I was just wondering if there is a way to have a dialog within a dialog. I want something like a property sheet but more flexible. My hex editor has like property sheets within a dialog box. Check out the first couple of screen shots at http://www.softcircuits.com/cygnus/find.htm. Don't know that I can describe, right here, the entire proceeedure of how I did it. I know I plopped a Tab control onto my dialog template. I created dialog templates with content for each of the tabs (child style). And, in my main dialog's OnInitDialog() method, I created the child dialogs and then ...
View settings for open/save dialogs ?
Helo, Running windows 7 pro 64bit. I want to select certain icon view setting for open/save dialogs for all files/dirs. For now I was able to set custom view for certain file/dir - but all others are forced details view. I want to set them all at once and permanently. How do I do that ? Main explorer window customizes ok. thanks Vilius ...
creating charts with XY
Hi, I thought I was well versed with Excel and charting, but... How can I create a chart with several lines, where I indicate the X and Y coordinates? For example, a chart with X = 100, Y = 100, and another line where X = 170, Y = 120? Can this be done in either Excel directly, or VBA? Thanks in advance, Willy Im sorry but I dont understand what you want? "Willy" wrote: > Hi, I thought I was well versed with Excel and charting, but... > How can I create a chart with several lines, where I indicate the X and > Y coordinates? > For example, a chart with X = 100, Y = 100...
Error
Outlook 2002(XP) - After receiving an email with an email address in the body of the email, we click on the email address and it opens up a box that says, "Can't create this item". If we click on a website address in the body of the email, it works. It just does not want to create a new outgoing email. I have repaired/reloaded outlook a few times with out any success. I have removed "HOTBAR" & some other adware crap using Lavasoft's Adaware. Repaired/Reloaded Outlook after removing "HOTBAR". I could not find any default email formats in t...
Bypassing Pop-Up Dialogs
I have a series of queries I must run on a monthly basis, that are make-table type. The tables created already "exist." I have button control on a form, that, when pressed, it initiated the series of about 10 queries that create all the tables. The problem is that I get a pop-up telling me, for example, that it is going to overwrite the data in the output table, and then, at the end, it asks me if it is ok to write all the rows into the table. My response are always "yes" to all 30+ of these queries pop-ups. Is it possible to have change a setting to automatical...
Dynamic change of dialog controls' properties
I've recently started to learn programming for Windows with MFC, and it seems quite difficult to find any pertinent info on how to dynamically change properties of the dialog controls that are specified in a resource file. For example, there are static text, input field and spin button controls that are initially disabled or grayed (i.e. has the WS_DISABLE attribute). I want to change their status to the opposite when one of the parent radio buttons is selected or de-activated. How do I do this Thanks a lot YuriP "YuriP" <anonymous@discussions.microsoft.com> wrote in mes...
Resizing the dialog bar
Hi, I am trying to resize the dialog bar programatically to fit exactly to its parent window's width. I have problem with this dialogbar when working on different monitors. Can any one please help me? Thanks Show your code. joe On Wed, 16 Dec 2009 09:08:01 -0800, Ram <Ram@discussions.microsoft.com> wrote: >Hi, > >I am trying to resize the dialog bar programatically to fit exactly to its >parent window's width. > >I have problem with this dialogbar when working on different monitors. > >Can any one please help me? > &g...
how do I create a handwritten signature?
I would like a facimile hand writen signature to my emails but do not know how to do it and add it to my outlook account You can scan in your signature so it will become an image. Then you can insert it like any other image into your electronic signature. For details about the signature feature in Outlook see; http://www.howto-outlook.com/howto/signatures.htm -- Robert Sparnaaij [MVP-Outlook] Coauthor, Configuring Microsoft Outlook 2003 http://www.howto-outlook.com/ Outlook FAQ, HowTo, Downloads, Add-Ins and more http://www.msoutlook.info/ Real World Questions, Real World A...
How do I create a windows form that is an ellipse
Hi! Normally when you create a form it's shape is a rectangle. Now I want to create a windows form that is not a rectangle but an ellipse instead I wonder if anyone have some good example of code where this is done. //Tony "Tony Johansson" <johansson.andersson@telia.com> wrote in message news:ec84YWZ0KHA.348@TK2MSFTNGP02.phx.gbl... > Hi! > > Normally when you create a form it's shape is a rectangle. > Now I want to create a windows form that is not a rectangle but an ellipse > instead > I wonder if anyone have some good ex...
[ANN] Create a TinyURL-no more broken links
Part 4 in the series AppleScripting Entourage: "Create a TinyURL-no more broken links" describes how to use an AppleScript to automate the process of creating a TinyURL as well as an alternative to running AppleScripts in Entourage with TypeIt4Me and TextExpander. If you're not familiar with a TinyURL, it's an online service that converts long URLs into short ones more appropriate to share in email. It's especially helpful sending out long links.Long links that are notorious for breaking. A TinyURL will not break in email postings and never expires. Create a TinyURL-no...