C / C++ / MFC Discussion Boards

chandu00414-Oct-07 21:18

14-Oct-07 21:18

simple,
do like this.
1.in your upload button,before your actual code, create a thread.
2.in that thread, show up your dialog containing "starting uploading process".
3.in your dialog, start onemore thread in initdialog.
4.in that thread, wait for 2 or 3 seconds and exit your new dialog.
thats it.
the above suggestions are only to give you a clue.
you have to apply some intelligence there to achieve this.
any more guidance required?,
you are welcome.
gud luck.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

Re: how to create a dialog box?

Roger Broomfield14-Oct-07 21:43

Roger Broomfield

14-Oct-07 21:43

I am curious as to why you would go to the trouble of starting threads when all it needs is to call SetTimer in OnInitDialog and have a WM_TIMER handler that calls KillTimer and EndDialog when the timer event fires.

Re: how to create a dialog box?

chandu00414-Oct-07 21:54

chandu004

14-Oct-07 21:54

hai broom, may be you are right.
but i want to know weather timer is different in performance to the thread.
AFAIK timer is also a sort of a thread.
in the example which i have given, he can even customise his second thread, such that, it kills the dialog, after uploading is completed.
iam not sure weather it can be achieved through timer.
thanks.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

Re: how to create a dialog box?

JudyL_MD15-Oct-07 2:35

JudyL_MD

15-Oct-07 2:35

chandu004 wrote:
but i want to know weather timer is different in performance to the thread.
AFAIK timer is also a sort of a thread.

Timer performance is the same regardless of whether it is called from the primary thread or a secondary thread. A timer is NOT a thread-type object - it has no executable context. It is an object that is queued by the OS and released / signalled by the OS when the period has expired.

chandu004 wrote:
in the example which i have given, he can even customise his second thread, such that, it kills the dialog, after uploading is completed.

If a simple modeless dialog is used by the main thread to indicate download in progress, the main program can then destroy the box when download is complete. This is how most progress dialogs are implemented.

Judy

Re: how to create a dialog box?

David Crow15-Oct-07 4:20

David Crow

15-Oct-07 4:20

chandu004 wrote:
in the example which i have given...

Which is complete overkill, given that two additional threads were suggested. Roll eyes | :rolleyes:

Using SetTimer() is the simplest and most practical solution.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: how to create a dialog box?

Nibu babu thomas14-Oct-07 21:24

Nibu babu thomas

14-Oct-07 21:24

AnayKulkarni wrote:
then that dialog box should get vanished automatically after 2-3 seconds

Try this --> http://nibuthomas.wordpress.com/2007/05/29/messageboxtimeout/[^]

Nibu thomas
MVP For VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http:\\nibuthomas.wordpress.com

ADsSecurity.dll [modified]

narayanagvs14-Oct-07 20:04

narayanagvs

14-Oct-07 20:04

Hi,

I need to programmatically set system folder permissions by using Active Directory Service Interfaces.For this I need ADsSecurity.dll file installed.These files are included with the software development kit (SDK) for Active Directory Service Interfaces 2.5.

Iam Unable to find the relevant link to download the dll.
Can anyone provide me the link to download?

Thanks

-- modified at 2:11 Monday 15th October, 2007

Today is a gift, that's why it is called the present.

about two or more processes ReadWrite a file simultaneity?

HOW WHAT14-Oct-07 19:52

HOW WHAT

14-Oct-07 19:52

like this:
1.When No.1 process reading a.txt, No.2 process read a.txt simultaneity, both read as usual.

2.When No.1 process reading a.txt, No.2 process write a.txt, No.2 process wait No.1 process read complete then write.

3.When No.1 process writting a.txt, No.2 process read a.txt, No.2 process wait No.1 process write complete then read.

4.When No.1 process writting a.txt, No.2 process write a.txt, No.2 process wait No.1 process write complete then write.

How use _locking(CRT functions) or LockFile, UnlockFile(Window API) finish above. it puzzled me someday. If somebody know, please tell me.Thanks very much.

Re: about two or more processes ReadWrite a file simultaneity?

chandu00414-Oct-07 21:25

chandu004

14-Oct-07 21:25

use some global flags(may be two or three),
which indicate the state of the other thread.
say for example,
int process1flag=0,process2flag=0;
and make the flag 1 if it is writing and make it 2 if it is reading.
after write or read operations, reset them to 0.
observe the same in the other process and take the decission depending on the flags.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

Re: about two or more processes ReadWrite a file simultaneity?

Naveen14-Oct-07 21:46

Naveen

14-Oct-07 21:46

chandu004 wrote:
which indicate the state of the other thread

He is talking about different process not different thread.

nave

[OpenedFileFinder]

Re: about two or more processes ReadWrite a file simultaneity?

chandu00414-Oct-07 21:56

chandu004

14-Oct-07 21:56

ok.

Re: about two or more processes ReadWrite a file simultaneity?

Naveen14-Oct-07 21:45

Naveen

14-Oct-07 21:45

You should use some synchronization with the help of Mutex.

Check CreateMutex(), WaitForSingleObject() and ReleaseMutex(). You can find many samples in CP that uses mutex.

nave

[OpenedFileFinder]

About Windows Media Encoder SDK

zakkas248314-Oct-07 18:28

zakkas2483

14-Oct-07 18:28

Hi all,

i am Encoding media files using WMSDK.As given in SDK Help i am using IWMEncoder interface for encoding. as part of that example

<br />
hr = pEncoder->Start();<br />
<br />
printf("When encoding stops, press a key to close the console window.");<br />
<br />
// Stop the encoding process.<br />
if ( SUCCEEDED( hr ) )<br />
{<br />
  // Wait for a key press.<br />
    while(!kbhit())<br />
        _asm nop;<br />
<br />
 hr = pEncoder->Stop();<br />
}<br />

i don't wants to use kbhit() and wants to complete hole file encoing process automatically.
For that we have functions put_Autostop() and get_Autostop() but there are not working properly.
So if anybody has an idea about that give plz.

a problem about AllocSysString()

nibabug14-Oct-07 17:34

nibabug

14-Oct-07 17:34

when i do write the following:
m_pRecordset->Open("CREATE TABLE MY10151109(ID INT,Hex_Fangwei TEXT,Hex_FuYang TEXT,Hex_QingXie TEXT)",
theApp.m_pConnection.GetInterfacePtr(),
adOpenDynamic,
adLockOptimistic,
adCmdText);

it runs OK;
but when i do it like this:
CString mstr;
mstr.Format("CREATE TABLE '%s'(ID INT,Hex_Fangwei TEXT,Hex_FuYang TEXT,Hex_QingXie TEXT)",TB_Name);
m_pRecordset->Open(mstr.AllocSysString（），
theApp.m_pConnection.GetInterfacePtr(),
adOpenDynamic,
adLockOptimistic,
adCmdText);

appear runtime error
who could tell me why , and what should i do?

wuhuaiji

Re: a problem about AllocSysString()

chandu00414-Oct-07 21:33

chandu004

14-Oct-07 21:33

nibabug wrote:
m_pRecordset->Open(mstr.AllocSysString（），

try putting mstr there and see
i.e. remove .AllocSysString().
AFAIK it should work.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

How to pass a struct to worker thread? [modified]

kuibing14-Oct-07 16:54

kuibing

14-Oct-07 16:54

<br />
void func()<br />
{<br />
struct SInfo SOCKINFO;<br />
SOCKINFO.pThis = this;<br />
SOCKINFO.ClientSocket = sockClient;<br />
strcpy(SOCKINFO.szClientIP, szClientIP);<br />
memset(SOCKINFO.szMessage, 0, BUFFER_SIZE);<br />
hThread = (HANDLE)_beginthreadex(NULL, 0, WorkThread, (LPVOID)&SOCKINFO, 0, NULL);<br />
}<br />

but,when WorkThread() is running,I'm worried about func() have been finished result in "struct SInfo SOCKINFO" be released.That's WorkThread() must be obtain a correct "struct SInfo SOCKINFO"?

UINT CServerSocket::WorkThread(LPVOID pParam)<br />
{<br />
	struct SInfo Param;<br />
	struct SInfo *lpParam = (struct SInfo*)pParam;<br />
//        ...etc<br />
}

-- modified at 23:16 Sunday 14th October, 2007

Re: How to pass a struct to worker thread?

David Crow14-Oct-07 16:59

David Crow

14-Oct-07 16:59

Allocate SOCKINFO on the heap and pass its address.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

thanks a lot~

kuibing14-Oct-07 17:21

kuibing

14-Oct-07 17:21

thanks a lot~

Different Right menu for different area

Michel_Huang14-Oct-07 16:54

Michel_Huang

14-Oct-07 16:54

how to add different Right menu for different area in a MFC UI Procedures,in order to achieve different control and operation.
For example ,A Tree List Control,when I Selecte one type of node ,I want it can Show one type of Right menu ,and if I select another type of node ,I wan it to show another kind of Right menu .
How to achieve it?Please Help me,thank you ~

Work hard. Laugh often. Keep your honor. Never to say never

Re: Different Right menu for different area

David Crow14-Oct-07 17:01

David Crow

14-Oct-07 17:01

You can: 1) create a different context menu at design time and bring up the one you need, or 2) create one context menu at design time and modify it at runtime, or 3) create the whole menu at runtime.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Different Right menu for different area

kuibing14-Oct-07 17:03

kuibing

14-Oct-07 17:03

你可以为每一种邮件添加一个资源菜单，根据不同的item，load相应的resource ID

	POINT point;<br />
	UINT uFlags;<br />
<br />
	//得到当前鼠标坐标<br />
	GetCursorPos(&point);<br />
<br />
	//转换成客户区坐标<br />
	m_ctrlTree.ScreenToClient(&point);<br />
<br />
	//获取选中的Item的句柄<br />
	HTREEITEM hItem = m_ctrlTree.HitTest(point,&uFlags);<br />
<br />
	//若句柄不为空，则弹出右键菜单<br />
	if(hItem)<br />
	{<br />
		hTreeCurrent = hItem;<br />
		ClientToScreen(&point);<br />
<br />
		VERIFY(menu.LoadMenu(IDR_TREERCLK));<br />
		pPopUp = menu.GetSubMenu(0);<br />
                //IDR_TREERCLK就是你建立的资源<br />
         }

Re: Different Right menu for different area

Michel_Huang14-Oct-07 17:14

Michel_Huang

14-Oct-07 17:14

ありがとう

Work hard. Laugh often. Keep your honor. Never to say never

Re: Different Right menu for different area

Michel_Huang14-Oct-07 17:13

Michel_Huang

14-Oct-07 17:13

감사합니다

Work hard. Laugh often. Keep your honor. Never to say never

How to clone a dialog

s196675m14-Oct-07 13:47

s196675m

14-Oct-07 13:47

I have a dialog template with some control on it.

When I will press a button on this dialog, I want to clone this parent dialog and modied some of its control and display this clone dialog as a modal or modeless. At that point I have two dialog one is the original and another is the clone version with some modification.

I will appreciate your help.
Thank you.

Re: How to clone a dialog

David Crow14-Oct-07 17:03

David Crow

14-Oct-07 17:03

Can't you just create another dialog template with the modified controls on it?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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