Multiple view updation - C / C++ / MFC Discussion Boards

Re: return value of = operator

Ryan Binns3-Apr-06 18:43

Ryan Binns

3-Apr-06 18:43

Iain Clarke wrote:
CFwibble a, b, c;

5 just for the class name! Big Grin | :-D

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: return value of = operator

Dr-Kuulun4-Apr-06 0:14

Dr-Kuulun

4-Apr-06 0:14

That's it! Thanx!

Dr-Kuulun

Setting properties of ActiveX using

Muhammad Azam3-Apr-06 8:08

Muhammad Azam

3-Apr-06 8:08

hi I have developed an ActiveX control using MFC and i am using it in IE. The control has a boolean property ShowThumbNail which i am able to set through scripting, but when i set this property using < PARAM > tag it seems that the property is not set and nothing happens.

please tell me how to set exposed properties of an ActiveX using < Param > tag. The control is developed using MFC
thanks

Azam

Re: Setting properties of ActiveX using

Sheng Jiang 蒋晟3-Apr-06 13:20

Sheng Jiang 蒋晟

3-Apr-06 13:20

override DoPropExchange and call PX_ functions.

Regards

Microsoft MVP in Visual C++

http://blog.joycode.com/jiangsheng

Re: Setting properties of ActiveX using

Muhammad Azam3-Apr-06 23:53

Muhammad Azam

3-Apr-06 23:53

thanks Sheng
it worked

Smile | :)

Azam

How to handle single click and double click on list view?

G Haranadh3-Apr-06 8:01

G Haranadh

3-Apr-06 8:01

I am using CListCtrl.
I would like to handle single click event and double click event on list controls.
Is that possiable.
List control's property is set to report style.
How to handle single click and double click on list view?
In single click I want to display the values of that colomn in the same dialog.
In double click I want to open another dialog and show related details.
Is this possiable.
What are the events I need to handle.

At Present I am using only one event

"ON_NOTIFY(LVN_ITEMACTIVATE, IDC_LIST_GROUPS, OnLvnItemActivateListGroups)"

to display colomn values in same dialog.

Please let me know any one.

Nice talking to you. Blush | :O

If you judge people, you have no time to love them. -- Mother Teresa

Re: How to handle single click and double click on list view?

ThatsAlok3-Apr-06 8:06

ThatsAlok

3-Apr-06 8:06

G Haranadh wrote:
t Present I am using only one event

Handle NM_DBLCLK message

Multiple view updation

Raghunandan S3-Apr-06 7:39

Raghunandan S

3-Apr-06 7:39

Hi All,
I want to develop an application in which my GUI supports multiple views(CRichEditView,CListView,CTreeView..).All the views are independent of each other. when any modification is done in any of the views,that view sends a notification to observer class and this class in turn would notify other views about the updation.Can some one tell how to design this in MFC.I want to make the design robust so that more views can be added with ease.

Thanks in advance
Raghu

Re: Multiple view updation

basementman3-Apr-06 7:49

basementman

3-Apr-06 7:49

See CDocument::UpdateAllViews()

onwards and upwards...

Checkbox button question

madmax00013-Apr-06 7:03

madmax0001

3-Apr-06 7:03

Hi,

I'm creating a checkbox button at runtime. How can I determine the size of the drawn checkbox in front of the text. Is there a method in CButton to do this or can I retrieve this with a function like ::GetSystemMetrics() ?
Additionally it would be fine if I also could get the space between the checkbox and the text.

Thanks

Re: Checkbox button question

David Crow3-Apr-06 7:08

David Crow

3-Apr-06 7:08

madmax0001 wrote:
I'm creating a checkbox button at runtime.

Any particular reason why you aren't doing this at design time?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: Checkbox button question

madmax00013-Apr-06 7:20

madmax0001

3-Apr-06 7:20

Hi,

yes. I'm writing a GroupCheckbox control (similar to http://www.codeproject.com/miscctrl/GenCGroupCheckBx.asp). So the CButton control must be placed at runtime on the groupbox control. But I want to make this work under Win2000 and XP with or without BS_FLAT style set. And I determined that with the BS_FLAT style set, the checkbox is a little bit bigger than without.

Re: Checkbox button question

David Crow3-Apr-06 7:39

David Crow

3-Apr-06 7:39

madmax0001 wrote:
So the CButton control must be placed at runtime on the groupbox control.

Right, but it doesn't have to be created at runtime. Create the checkbox at design time and simply move it into the correct location using MoveWindow() or SetWindowPos().

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: Checkbox button question

includeh103-Apr-06 7:17

includeh10

3-Apr-06 7:17

Only suggestion:
resize your check-box by MoveWindow(), if u can see the check-box but can't see its text, the size should be right.

i think all OS use same size for the square image of check-box, so once u know the size, u can use it anywhere for forever.

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Integrating Visual C++ and Java

pwimmers3-Apr-06 6:43

pwimmers

3-Apr-06 6:43

I am using the JNI and can call methods in my C++ code. Now I need help going in the other direction. My c++ code need to send an update back to Java. I am using JDK1.5.0 so StubsPreamble no longer exists.

Pat

Re: Integrating Visual C++ and Java

includeh103-Apr-06 6:48

includeh10

3-Apr-06 6:48

one idea is to establish pipes between C++ and java apps, so you can get/send signals from/to C++ and java apps - communications between them.

AfxBeginThread

viperlogic3-Apr-06 6:38

viperlogic

3-Apr-06 6:38

i have a function that i want a worker thread to execute it, my function is of the type

bool wmi(IP)

Can i use AfxBeginThread() with this or can only void functions be called? how can i pass a variable back or do i have to use a pointer?

thanks

Re: AfxBeginThread

includeh103-Apr-06 7:01

includeh10

3-Apr-06 7:01

if u want to pass a variable back, u must use a pointer.

code is in this way:
...ThreadFunction(void*pv)
{
SomeClass*pc=(SomeClass*)pv;
pc->SomeVariableBack=...;
}

it may not be what u want ...

Re: AfxBeginThread

David Crow3-Apr-06 7:07

David Crow

3-Apr-06 7:07

viperlogic wrote:
Can i use AfxBeginThread() with this

Indirectly you can. Something like:

AfxBeginThread(ThreadProc);
...
UINT ThreadProc( LPVOID lpParam )
{
    wmi();
}

You'll likely need to use the second argument to AfxBeginThread() as a way to call or communicate with the wmi() function.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: AfxBeginThread

viperlogic3-Apr-06 7:39

viperlogic

3-Apr-06 7:39

thx for the reply

how would i implement a timer, so that after say 5secs if the thread hasnt finished, kill it?

Re: AfxBeginThread

David Crow3-Apr-06 7:51

David Crow

3-Apr-06 7:51

Use WaitForSingleObject() for this.

CWinThread *pThread = AfxBeginThread(..., CREATE_SUSPENDED);
pThread->m_bAutoDelete = FALSE;
pThread->ResumeThread();
...
switch(WaitForSingleObject(pThread->m_hThread, 5000))
{
    case WAIT_TIMEOUT:
        // need to kill the thread
        break;

    case WAIT_OBJECT_0:
        // thread has terminated on its own
        break;
}

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: AfxBeginThread

viperlogic3-Apr-06 8:22

viperlogic

3-Apr-06 8:22

thx for the replys

i am having trouble implementing AfxBeginThread()

<br />
void CScanDlg::OnButtonScan() <br />
{<br />
   AfxBeginThread(ThreadProc);<br />
}<br />
<br />
UINT CScanDlg::ThreadProc(LPVOID pParam)<br />
{<br />
	if(wmi(strIP1))<br />
            return 0;<br />
         else<br />
            return 1;<br />
}<br />

what is wrong above, sorry about these questions but this is new to me

Re: AfxBeginThread

David Crow3-Apr-06 8:31

David Crow

3-Apr-06 8:31

viperlogic wrote:
i am having trouble implementing AfxBeginThread()...

Aside from not suppling enough arguments, what troubles are you having?

viperlogic wrote:
UINT CScanDlg::ThreadProc(LPVOID pParam)

Is this a static member?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: AfxBeginThread

viperlogic3-Apr-06 8:58

viperlogic

3-Apr-06 8:58

ok this is what i have..

static UINT CScanDlg::ThreadProc(LPVOID pParam); delcared in the header file

<br />
AfxBeginThread(ThreadProc,NULL,THREAD_PRIORITY_NORMAL,0,0,NULL);<br />

<br />
UINT CScanDlg::ThreadProc(LPVOID pParam)<br />
{<br />
	if(wmi(strIP1))<br />
		return 0;<br />
	else<br />
		return 1;<br />
}<br />

i get the following error
CScanDlg::wmi' : illegal call of non-static member function

Re: AfxBeginThread

David Crow3-Apr-06 9:09

David Crow

3-Apr-06 9:09

Try:

AfxBeginThread(ThreadProc, this);
...
UINT CScanDlg::ThreadProc( LPVOID pParam )
{
    CScanDlg *pDlg = (CScanDlg *) pParam;
 
    if (pDlg->wmi(strIP1))
        return 0;
    else
        return 1;
}

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

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