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Hi.
I am all sorts of issues displaying a text on my dialog so first let me say what's involved
I have a CStatic ptr says
CStatic *mytext
I instintate this say
mytext = new CStatic;
The next few steps im not sure of the order
So now I want to connect this CWnd object to my resource file Id in my DIALOGEX resource says its a CTEXT so I call UpdateData or CDialog::OnInitDialog which does that for me
The DDX_control connects my CTEXT to mytext CWnd object next I do a mytext->SetWindowText however nothing appears within my CDialog
Do first have to do SetWindowText before DDX_control if DDX_control initilizes the CTEXT with what text is in my text then maybe I do
I have tried all sorts of methods including DrawText to display the text whitin the dialog but I get nothing displayed
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Can't you just add the CStatic control to the dialog via the resource editor? Then associate a CString variable to it and use UpdateData()?
In your code how did you size the CStatic control? Did you use the Create() method anywhere to give it its size, style, initial text, etc?
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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Hi
I use MoveWindow to size it
I think calling CDialog::OnInitDialog will call UpdateData to connect the resource in my case CTEXT to the CWnd object
After wards in my ::OnInitDialog I use MoveWindow followed by SetWindowText for the control and ShowWindow for both the control and dialog box I then do a return TRUE
However nothing is displayed
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Call the create Create() method with initial values and see if anything displays.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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With the text as the first parm. Ok I'm at work will try tommorow thanks for your help
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I have to ask, are there reasons why you can't use the resource editor to add the CStatic control, as opposed to using ptr = new CStatic?
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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I am connecting via Tcp/ip
CAsyncSockets to another computer the information I receive will be displaed in the CStatic
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But the dialog and display controls in it don't care where the data comes from. Typically (at least for me), when I build a dialog using the resource editor, I place a static control on the dialog, just like I place edit boxes, list boxes, etc. I then create a variable associated with that static control (typically using a wizard), the variable could be a CString type or a control type. If I use a CString type variable, I use UpdateData(), if I use a control type variable I use SetWindowText() and that's about it. Seems like you might be making it unecessarily more complicated.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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Thanks so much i am displaying z/OS (mainframe data on windows)
I am mainframe programmer and its people like yourself that have helped me understand MFC
So can I call Updatedata to initialize the CTEXT I am assuming no that I am not using a control but rather a variable it would be DDX_Text I might also add that I have Richeditctrl in the dialog I am displaying a storage area in the richedit
And the static info are things like what storage area it came from like subpool
Storage protection key I also noticed DDX_Text takes unit I would assume it converts it to CString before the display
Thanks again
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Sorry
But my question is can I call
UpdateData from anywhere or does it have to be from CDialog::Oninitdialig
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You can call it from anywhere. You usually call it first from CDialog::OnInitDialog to set the initial values of the variables. Then you call it at other times, in response to user input to save any new values.
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ForNow wrote: I have a CStatic ptr says
CStatic *mytext
Why use a pointer? Just add:
CStatic mytext;
to your dialog's header file. Add an entry to your dialog's DoDataExchange() method like:
DDX_Control(pDX, IDC_MYTEXT, mytext);
Then in your dialog's OnInitDialog() method, set the control's text like:
mytext.SetWindowText(_T("Hello World"));
And that's it! No need for pointers, memory allocation, or messy calls to UpdateData().
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles
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Thanks in a related question if I wanted to change the font of the text I'm guessing I would do that in a the OnCtlColor would I use pWnd->SetFont (of course after I created a font) with CreateFontIndirect or would I use the pDC and do pDC->SelectObject
Thanks
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See the "Bold static controls" section of this article.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles
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You are really helpful I am going to press my luck and ask the following if the variable was a CString using DDX_Text as per jeron1 would I then look to change The font in OnCtlColor
Thanks
Thanks
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I do not know. In 23 years of using MFC, I've never used a CString as an interface to a static control. Give it a whirl and let us know how it works.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles
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I can't imagine setting or changing the font color being affected by the type of variable (CString or CStatic)associated with the control.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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I was just looking to change the font of a control associated with a CString
David's suggestion would work if I associated the control with a CStatic CWnd object
Thanks
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Another way could be like something shown here[^].
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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How often are you changing fonts? Once? if so just call SetFont(...) on the static control object in the OnInitDialog() handler and be done with it (make sure the CFont object is a member of the dialog class). After that you can call SetWindowText() whenever you want. Should be quick enough to try.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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I agree the only things I was adding is the I have to add the message handlers to my CDialog derived for it work per day he article
Thanks will try Tommrow
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jeron1 just wanted to thank you I couldn't get anything going with DDX_Control/CStatic
but the DDX_Text/CString worked out great
Thanks
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Hi,
I'm developing a server multithread (multiclient) and I have a problem with recv function (c language - SO: windows).
My clients send info to server every 5 seconds and recv function blocks thread until info arrives. I try with ioctlsocket, but the number of byte read always is 0; I try with flag MSG_PEEK, but the data is copied into the buffer, but is not removed from the input queue and so I have many messages.
Is there a way to perform recv function no blocking?
THANKS
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Usually a blocking recv is not a problem at all in a multithreaded application: the receiving thread blocks but the other threads keep runnning and the application is responsive.
On the other hand, as you may find in the documentation[^], you might use non blocking mode on sockets, however, I guess, your application would be more involved.
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