C / C++ / MFC Discussion Boards

Re: Dialog Box question

Pett4-Nov-02 3:01

Pett

4-Nov-02 3:01

I created the resource, but no.. didn't derive a new CDialog class. I thought I didn't have to. Unsure | :~

I will try that. Thank you!

Re: Dialog Box question

Gero Gerber4-Nov-02 3:04

Gero Gerber

4-Nov-02 3:04

Use class-wizard to generate the derived class from CDialog. Remember to select the right dialog ressource id when generating the derived class.

Gero

Re: Dialog Box question

Pett4-Nov-02 3:22

Pett

4-Nov-02 3:22

ok, I've done that, but still nothing happens when I click on the button.
What am I not doing? Confused | :confused:

Re: Dialog Box question

Gero Gerber4-Nov-02 3:25

Gero Gerber

4-Nov-02 3:25

Did you use class wizard? Did you chose the right dialog ressource id in class wizard? Which type is m_chatterChooser now?

Gero

Re: Dialog Box question

Pett4-Nov-02 3:32

Pett

4-Nov-02 3:32

I have it as CDialog. I chose the resource ID for the dialog that I just built. (Chatter chooser).

What do I have to change the type to? I put CCHooser which is the name of the class.. and I got errors.
Please bear with me, I'm new to this.

Thank you so much

Re: Dialog Box question

Gero Gerber4-Nov-02 3:36

Gero Gerber

4-Nov-02 3:36

If your derived class is named CCHooser you have to include CCHooser.h in the source file where you have declared m_chatterChooser.

#include "CCHooser.h"

Gero

Re: Dialog Box question

Pett4-Nov-02 3:51

Pett

4-Nov-02 3:51

I have six errors! Confused | :confused:

I have in my mainframe.cpp

#include "CHOOSER.h"<br />
#include "CHOOSER.cpp"

and

void CMainFrame::OnSFile() <br />
<br />
{<br />
	// attempting to open a small dialog box to choose a chatter to send file to:<br />
	<br />
	m_chatterChooser.DoModal();}

In my mainframe.h:

CCHOOSER m_chatterChooser;

Also, the name of the class is CCHOOSER, but the fileview has chooser.cpp and chooser.h

I know this is a simple thing.. why I am having so much trouble? Confused | :confused:

Re: Dialog Box question

Gero Gerber4-Nov-02 3:54

Gero Gerber

4-Nov-02 3:54

You must not include this line!

#include "CHOOSER.cpp"

Gero

Re: Dialog Box question

Pett4-Nov-02 3:56

Pett

4-Nov-02 3:56

If this wasn't me, ikt would almost be funny!

Now I have 5 errors!

Re: Dialog Box question

Gero Gerber4-Nov-02 3:58

Gero Gerber

4-Nov-02 3:58

Just send me your project (gerogerber@gmx.de), or tell me which errors you get.

Gero

Re: Dialog Box question

Gero Gerber4-Nov-02 3:36

Gero Gerber

4-Nov-02 3:36

m_chatterChooser must be of type CChooser

Re: Dialog Box question

Pett4-Nov-02 3:58

Pett

4-Nov-02 3:58

Errors!

compiling...<br />
Mainfrm.cpp<br />
D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\mainfrm.h(48) : error C2146: syntax error : missing ';' before identifier 'm_chatterChooser'<br />
D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\mainfrm.h(48) : error C2501: 'CCHOOSER' : missing storage-class or type specifiers<br />
D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\mainfrm.h(48) : error C2501: 'm_chatterChooser' : missing storage-class or type specifiers<br />
D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\Mainfrm.cpp(162) : error C2065: 'm_chatterChooser' : undeclared identifier<br />
D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\Mainfrm.cpp(162) : error C2228: left of '.DoModal' must have class/struct/union type<br />
Error executing cl.exe.<br />
<br />
chatter.exe - 5 error(s), 0 warning(s)

Re: Dialog Box question

Gero Gerber4-Nov-02 4:01

Gero Gerber

4-Nov-02 4:01

Maybe a misspelling - try CChooser instead CCHOOSER. C++ is case sensitive.

Gero

Re: Dialog Box question

Pett4-Nov-02 4:05

Pett

4-Nov-02 4:05

That didn't work, same 5 errors. I know C++ is case sensitive, that's why I put it in all caps. The class is in all caps.

I'm going to delete the class and start again.. and give it a name that doesn't start with C!

Is that a good idea?

Thank you so much for your help! Rose | [Rose]

Re: Dialog Box question

Gero Gerber4-Nov-02 4:07

Gero Gerber

4-Nov-02 4:07

If you want send me the code.

Gero

Re: Dialog Box question

Pett4-Nov-02 4:09

Pett

4-Nov-02 4:09

The whole project (actually it is two.. client and server) is large. Shall I send just the relevant code pasted in a document?

Re: Dialog Box question

Pett4-Nov-02 5:03

Pett

4-Nov-02 5:03

Thank you so much. Rose | [Rose]

What you suggested worked!

Pett.

Re: Dialog Box question

jhwurmbach4-Nov-02 4:54

jhwurmbach

4-Nov-02 4:54

I try to help you:

Pett wrote:

D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\mainfrm.h(48) : error C2146: syntax error : missing ';' before identifier 'm_chatterChooser'<br />
D

Here, m_chatterChooser has an unknown datatype.
In the mainfrm.h mentioned write a line #include "chooser.h"
(next to the other #include lines). Use the name of the FILE where CChooser is declared, not the name of the class itself. (normaly these differ by a leading 'C')and a trailing '.h'

Pett wrote:

D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\mainfrm.h(48) : error C2501: 'CCHOOSER' : missing storage-class or type specifiers

Here is the same problem. CHOOSER is wrong spelling (case-sensitive)

Pett wrote:

D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\mainfrm.h(48) : error C2501: 'm_chatterChooser' : missing storage-class or type specifiers

Here, same line - related problem!

Pett wrote:

D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\Mainfrm.cpp(162) : error C2065: 'm_chatterChooser' : undeclared identifier

The variable m_chatterChooser is not known - you due to the errors before.

Pett wrote:

D:\Documents and Settings\Administrator\My Documents\CS61A Info\Assignment1\cs61a\CHATTER\Mainfrm.cpp(162) : error C2228: left of '.DoModal' must have class/struct/union type

Same line-same problem. You can not call a methos from an non-existing object.

Hope this helped.
If you post your errors, it is much easier to help you.

Don't give up. You WILL make it. I know how intimidating I was in the beginning when the compiler spat out hundreds of errors, just for one missing comma.

Re: Dialog Box question-- Thank you!

Pett4-Nov-02 5:05

Pett

4-Nov-02 5:05

Thank you very very much! Rose | [Rose]

Please help with Web Browser

rrrado4-Nov-02 2:13

rrrado

4-Nov-02 2:13

I need to customize WebBrowser component so that i could turn off downloading images, disable script, ...
I fount this MSDN article about that (http://msdn.microsoft.com/library/default.asp?url=/workshop/browser/hosting/wbcustomization.asp),
but I have MFC appication, i'm not familiar with COM. Does anybody know, where and how to implement interfaces like IDocHostUIHandler. Which class i have to use ? how to add into project ?
Thanx

rrrado

CAnimateCtrl

Marcus7774-Nov-02 2:10

Marcus777

4-Nov-02 2:10

Can someone give me hint
howto create an animation
control that keeps playing
while the main program
executes some lenghty
calculations, let's say
for (int i=0; i<10000000000; i++)
sum+=i;
(i know! it's only an example!!)
I createad an animation control
the standard way (with timer)
which didn't work of course,
and one other in an extra thread,
which i excpected to work,
but it stopped also during the loop!
Didn't anyone have the same
problem yet? Putting getmessage/
translate/dispatch into the
loop is not the right solution
for me! Do i have to create
an extra process for this?
Doesn't seem so elegant!
Thank you Smile | :)

Responding to WM Messages in a DLL

Brigg Thorp4-Nov-02 1:48

Brigg Thorp

4-Nov-02 1:48

OK. I have a project (a DLL written in C) that communicates over USB from the PC to a device. It works great, but I need the ability to turn off a progress dialog that I call with the DialogBox function. In other words, I want to be able to transfer data without showing any user interface. I've thought about ways to do this...create a thread, hide the dialog, etc. The problem is, I don't know how to respond to the WM messages (specifically WM_TIMER) if I don't have the UI. I have an API call that is called by an external program, which calls a routine with the DialogBox API. The DialogBox API has a callback procedure that I can process these messages in. So how do I have this API work without a dialog? Do I have to do a PeekMessage or something? It's been a while since I've programmed in straight C for Windows.

Brigg Thorp
Software Engineer
Timex Corporation

Re: Responding to WM Messages in a DLL

Andreas Saurwein4-Nov-02 6:47

Andreas Saurwein

4-Nov-02 6:47

I think you are out of luck. If the API requires the dialog you can just try to make the dialog invisible (calling ShowWindow(...). Then messages like WM_TIMER will still pass through while the user does not see the dialog anymore.
You can also use AttachThreadInput if you want to get into more "intimate" contact with the dialog's message processing.

I keep submitting “VB” as a Priority-1 bug, but apparently no one here knows how to fix it. Nick Hodapp, Semicolon

Re: Responding to WM Messages in a DLL

Brigg Thorp4-Nov-02 7:53

Brigg Thorp

4-Nov-02 7:53

I was actually able to get it to work by calling SetTimer before I start communication. I use a callback for the timer event instead of a Windows message which gets fired every time the timer expires. I do the following when the API is called in the DLL from the user's application:

SetTimer(hWnd, IDT_TIMER1, TIMER_INTERVAL, (TIMERPROC)HiddenSendDataProc);
MSG msg;          // message structure
while (GetMessage(&msg, // message structure
       NULL,           // handle to window to receive the message
       NULL,           // lowest message to examine
       NULL)          // highest message to examine
          != 0 && GetMessage(&msg, NULL, NULL, NULL) != -1)
  {
    // Post WM_TIMER messages to the hwndTimer procedure.
    if (msg.message == WM_TIMER)
    {
      msg.hwnd = hWnd;
      HiddenSendDataProc(hWnd, WM_TIMER, 0, 0);
    }
    TranslateMessage(&msg); // translates virtual-key codes
    DispatchMessage(&msg);  // dispatches message to window
  }

It works!

Brigg Thorp
Software Engineer
Timex Corporation

Change the background color of a static text control

Daniel Strigl4-Nov-02 1:24

Daniel Strigl

4-Nov-02 1:24

How to change the background color of a static text control (IDC_STATIC) in a dialog?

Daniel Wink | ;)

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