Re: Problem using then event of OnSize - C / C++ / MFC Discussion Boards

Nothend8-Jan-07 3:56

8-Jan-07 3:56

I built a demo project that using OLE-DB,I add two controls on my form
(Single Document),one is DataGrid,the other is ADODC,What my purpose is that I want to resize the size of the two controls when the form shows,the variables that connect to the two controls are m_DataGrid and m_AdoDC;
the code is as followed:
void CADO2View::OnSize(UINT nType, int cx, int cy)
{
int iHeight;
int iWidth;
CRect oRect;
COleDBRecordView::OnSize(nType, cx, cy);
if (m_AdoDC.m_hWnd==NULL||m_DataGrid.m_hWnd==NULL)
{
return;
}
else
{
m_AdoDC.GetClientRect(oRect);
iHeight=oRect.Height();
iWidth=oRect.Width();
m_AdoDC.MoveWindow(0,0,iWidth,iHeight,TRUE);
m_DataGrid.MoveWindow(0,iHeight,cx,xy,TRUE);
}
}
But the code doesn't work,so how to resize the controls when the form shows?

Nothend

-- modified at 19:51 Monday 8th January, 2007

Re: Problem using then event of &amp;amp;quot;OnSize&amp;amp;quot;

Cedric Moonen8-Jan-07 4:10

Cedric Moonen

8-Jan-07 4:10

Nothend wrote:
But the code doesn't work,so how to resize the controls when the form shows?

What happens exaclty ? What does 'not working' mean ?

Also, use the pre or code tag when you post code (it will make it more readable)

Cédric Moonen
Software developer

Charting control [v1.1]

Re: Problem using then event of OnSize

Nothend8-Jan-07 13:50

Nothend

8-Jan-07 13:50

I am sorry about that,because I am a student from China,my English is poor.
What I want is that when the view shows,the DataGrid and the ADODC will position the right place on the form(view),not the place I put when using the control bar.
As the code shows that,the event of OnSize takes place first than that of
DoDataExchange,so the two variables(m_AdoDC and m_DataGrid) are null when OnSize takes place.
I use PostMessage(WM_SIZE) in the event of OnInitialUpdate,and then it happpens,but the control ADODC doesn't move when I pull the form ,and the DataGrid does.
So how can I do ?
Thanks a lot!

Nothend

Re: Problem using then event of &amp;amp;quot;OnSize&amp;amp;quot;

Cedric Moonen8-Jan-07 4:19

Cedric Moonen

8-Jan-07 4:19

Well, I didn't look at all the details of your code for my previous answer (your explanation was a bit vague). But I think the problem is here:

Nothend wrote:
m_AdoDC.GetClientRect(oRect);
iHeight=oRect.Height();
iWidth=oRect.Width();
m_AdoDC.MoveWindow(0,0,iWidth,iHeight,TRUE);
m_DataGrid.MoveWindow(0,iHeight,cx,xy,TRUE);

You said that m_AdoDC is a member of your class, so it will never resize. The only thing that is resizing is your view. So what you need to do is retrieve the new size of your view (using GetClientRect) and then calculate the new sizes of the two other controls.

Cédric Moonen
Software developer

Charting control [v1.1]

Re: Problem using then event of &amp;amp;quot;OnSize&amp;amp;quot;

Nothend8-Jan-07 13:52

Nothend

8-Jan-07 13:52

I am sorry about that,because I am a student from China,my English is poor.
What I want is that when the view shows,the DataGrid and the ADODC will position the right place on the form(view),not the place I put when using the control bar.

As the code shows that,the event of OnSize takes place first than that of
DoDataExchange,so the two variables(m_AdoDC and m_DataGrid) are null when OnSize takes place.

I use PostMessage(WM_SIZE) in the event of OnInitialUpdate,and then it happpens,but the control ADODC doesn't move when I pull the form ,and the DataGrid does.

So how can I do ?
Thanks a lot!

Re: Problem using then event of &amp;amp;quot;OnSize&amp;amp;quot;

Hamid_RT8-Jan-07 17:38

Hamid_RT

8-Jan-07 17:38

You can use of SendMessage(WM_SIZE)

WhiteSky

Re: Problem using then event of OnSize

Hamid_RT8-Jan-07 17:37

Hamid_RT

8-Jan-07 17:37

Why it dosent work?

WhiteSky

Re: Problem using then event of OnSize

Nothend8-Jan-07 18:33

Nothend

8-Jan-07 18:33

Because the event of OnSize takes place first than that of DoDataExchange,so the controls' m_hWnds are null.

I have used the PostMessage(WM_SIZE),it works,but the ADODC control can't move,I don't know why.
Thanks

Nothend

Re: Problem using then event of OnSize

Hamid_RT8-Jan-07 19:15

Hamid_RT

8-Jan-07 19:15

What happens if you insert ScreenToClient/*for converts coordinates */ after m_AdoDC.GetClientRect(oRect);

m_AdoDC.GetClientRect(oRect);
m_AdoDC.ScreenToClient(oRect);

WhiteSky

Re: Problem using then event of OnSize

Nothend8-Jan-07 20:04

Nothend

8-Jan-07 20:04

It's all the same .
Nothing happen.

Nothend

Re: Problem using then event of OnSize

Nothend8-Jan-07 20:09

Nothend

8-Jan-07 20:09

Do you mind that I send you a email including the demo code to you?

Nothend

Re: Problem using then event of OnSize

prasad_som8-Jan-07 20:00

prasad_som

8-Jan-07 20:00

Nothend wrote:
Because the event of OnSize takes place first than that of DoDataExchange,so the controls' m_hWnds are null.

Call UpdateData as first statement in OnSize, which eventually calls DoDataExchange.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Problem using then event of OnSize

Nothend8-Jan-07 20:17

Nothend

8-Jan-07 20:17

I have tried that ,but it would be error.
It will show error dialog saying that "Debug Assertion Failed",and if I retry,the XP sends me a error report.

Nothend

Responding to TAB in CEdit

Shay Harel8-Jan-07 3:38

Shay Harel

8-Jan-07 3:38

Hi,

I have sub classed CEdit and I can get notifications for example in the OnKeyDown function for any VK_XXXXX keys. From some odd reason, the VK_TAB is not responding, any reason why ?

Basically, what I am looking for is to do auto complete Linux type. I already have the data to auto complete and I just want to do it with the TAB key. The problem is that no matter what I tried, the TAB always does what it's "programmed" to do in windows, it jumps to the next field.

Any help is appreciated.

shay

Re: Responding to TAB in CEdit

CPallini8-Jan-07 3:55

CPallini

8-Jan-07 3:55

I think you have to override the PreTranslateMessage() method.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Responding to TAB in CEdit

Shay Harel8-Jan-07 4:08

Shay Harel

8-Jan-07 4:08

that did the trick

How can i use Image magick in MFC?

$uresh $hanmugam8-Jan-07 2:33

$uresh $hanmugam

8-Jan-07 2:33

Hi all,

I have creating dialog based window in vc++(MFC) and i installed image magic(dynamic dll of binary version).

I need to know about InitializeMagic(char *) function. Is Magic must be initialize?... when i read one image using read(std::string) function.....

#include <Magick++.h><br />
#include <<iostream><br />
using namespace std;<br />
using namespace Magick;<br />
<br />
void CSampleDlg::OnButttonClick()<br />
{<br />
   Image img;<br />
   img.read("c:\\logo.jpg");<br />
}

Error will be thrown like......

Unhandled exception at 0x000c256.. in Csample3.exe:0xC000075:
Access voilation writing location 0xcde....

Now i am using VS 2005...
Anybody know about this problem let me know...

Thankx in advance...

Re: How can i use Image magick in MFC?

C^hris L^osinger8-Jan-07 3:35

C^hris L^osinger

8-Jan-07 3:35

did you look at the Magick++ documentation ?

image processing toolkits | batch image processing | blogging

Re: How can i use Image magick in MFC?

$uresh $hanmugam8-Jan-07 22:12

$uresh $hanmugam

8-Jan-07 22:12

I already seen that the Image magic Documetation, but i cant get clearly.
I thing your recently sending links are very useful for me.
I will try it...thank you.

process termination issue

Raj Prathap8-Jan-07 2:25

Raj Prathap

8-Jan-07 2:25

hi,
I'm facing some problem with the termination of the process.
I have a COM DLL, which intern talks to a drive through a serial communication medium.
And the COM Client, has some 5/6 threads runing.
The problem is, *Some Times* when I close the application, the application never closes.
Some threads of the process are still running, which prevents the usage of the serial port by
the next instance of the application.

Yet another problem is, the problem araises very rarely. Please help me!!

Thanks in advance,
Raja Pratap

Re: process termination issue

Monty²8-Jan-07 2:27

Monty²

8-Jan-07 2:27

What mechanism are you using to signal to the running threads that its time to stop?

If you think you can than you can, if you think you can't you are right.

Re: process termination issue

Raj Prathap8-Jan-07 2:46

Raj Prathap

8-Jan-07 2:46

Thanks for the reply.<br />
 Here is the way I'm terminating.<br />
 <br />
 1. PostThreadMessage(WM_QUIT, NULL, NULL);<br />
 2. dwState = ::WaitForSingleObject(m_hThread, 6000);<br />
<br />
 3. if(dwState != WAIT_OBJECT_0)<br />
  	TerminateThread(m_hThread, dwExitCode);

--
Pratap

Re: process termination issue

Stephen Hewitt8-Jan-07 11:42

Stephen Hewitt

8-Jan-07 11:42

Stack traces of what the application is doing when hung would be a big help. Also, what framework (if any) is being used?

Steve

Problem using OpenFileDialog

priyank_ldce8-Jan-07 2:03

priyank_ldce

8-Jan-07 2:03

Hi all,
I want to use OpenFileDialog Class to open a file in my VC++.NET win32 application. But I am getting this error.

error C2262: 'myFile' : cannot be destroyed

For the code

OpenFileDialog myFile;

Can I know what is wrong with my code I have added using namespace System::Windiws::Forms; in my file.

Thanks in advance,
Priyank

Re: Problem using OpenFileDialog

Monty²8-Jan-07 2:28

Monty²

8-Jan-07 2:28

if you ask this in the right .NET forum you might get better answers.

If you think you can than you can, if you think you can't you are right.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.