C / C++ / MFC

Re: how we can compare the dialog length to screen length

5-Jul-06 21:45

I think you need to calculate (width and height) from windows and then you want to set location from window
but i see in first your message "if we move the dialog to end of the screen then the child must move to left this is my project" you can use GetWindoRect(rect);ScreenToClient(rect); and then use from rect for location child window

whitesky

vasusree5-Jul-06 23:33

vasusree

5-Jul-06 23:33

i done it partially.
because once i compare this co-ordinates then it is moving towards left.after that if we move with mouse cursor then it will not moving to left.no action is there.
so please help me.
vasu.

Re: how we can compare the dialog length to screen length

Hamid_RT6-Jul-06 1:01

Re: how we can compare the dialog length to screen length

6-Jul-06 1:01

your window is child so it depend to main dialog so when you want to change location to out main dialog you cant(my guess)

whitesky

Weiye Chen5-Jul-06 21:47

Weiye Chen

5-Jul-06 21:47

For the logic, you have to work it out yourself. Basically you may wish to check out these functions.

GetSystemMetrics[^] - To get the width and height of your desktop.

GetWindowRect[^] - To get the location and size of your dialog.

SetWindowPos[^] - Set the location for your dialog.

CWnd::OnMoving[^] - The framework calls this member function while a user is moving a CWnd object.

LPINT causes Exception

Checker20035-Jul-06 21:12

Checker2003

5-Jul-06 21:12

Hello, I receive a string from registry which looks like this "(1;2;3;4;5;6;7)" it saves the order of the columns of my listview object
Now I want to put it into an LPINT but when I use SetColumnOrderArray it causes an exception:

LPINT lp_OrderArray = (LPINT) malloc(iColumns*sizeof(int));<br />
	<br />
	for( i;i < iColumns-1; i++)<br />
	{<br />
		strRegPos = strColOrder[p]; <br />
		int nNumField = _stscanf(strRegPos,	_T("%i"), &iPos);<br />
		<br />
		if (nNumField != EOF)  <br />
		{ <br />
			lp_OrderArray[i] = iPos; <br />
			p = p + 2;							//next Pos<br />
		}<br />
	}

I am not the best developer, but maybe someone here could help me

regards

Re: LPINT causes Exception

Sarath C5-Jul-06 21:25

Re: LPINT causes Exception

5-Jul-06 21:25

One thing. the exception is not occured by LPINT

Checker2003 wrote:
strRegPos = strColOrder[p];

what is the value of p? I clearly doubt this. on each iteration you are incrementing p by 2 it will cause array bound exception. you are not checking it whether it is in array size or not

suppose you have 10 elements.

if the index reach 5th (or 6th) element, I think you program will crash unless there are more elements ni steColOrder.

One more thing, in your loop, make sure that the i is initialize properly.

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

<blink>My Blog | Understanding State Patte

Checker20035-Jul-06 21:30

Checker2003

5-Jul-06 21:30

Thank you for your fast reply sarath,

My Array has always the same size, because my Listview control hast always 7 Columns.
My tags are initialized in this way:

int iColumns = 8;
int i = 0;
int iPos = 0;
int p = 0;

thank you for your efforts

Re: LPINT causes Exception

Justin Tay5-Jul-06 22:27

Justin Tay

5-Jul-06 22:27

Shouldn't it be
iColumns = 7;
int p = 1;
for(i=0; i < iColumns; i++)
?

I don't see where the exception is coming from though. What is the exception and which line does it occur?

UpdateWindow is required?

Sarath C5-Jul-06 20:35

5-Jul-06 20:35

In an MSDN sample, I saw a code snippet

HWND hwnd;

   hwnd = CreateWindowEx(
       // parameters
       );

   ShowWindow(hwnd, SW_SHOW);
   UpdateWindow(hwnd);

Why should we call UpdateWindow,after showing window? Don't the ShowWindow function refreshes the window?

Here that code!!![^]

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

<blink>My Blog | Understanding State Patte

Hamid_RT5-Jul-06 20:41

5-Jul-06 20:41

This function update window with send WM_PAINT

whitesky

Sarath C5-Jul-06 20:50

5-Jul-06 20:50

ShowWindow(hwnd, SW_SHOW);

This wont send a paint message?

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

<blink>My Blog | Understanding State Patte

Sarath C5-Jul-06 20:55

5-Jul-06 20:55

ok ok I understood.
ShowWindow sends paint message only if required right?

this one makes sure that the window redraws when initialized right?

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

<blink>My Blog | Understanding State Patte

Hamid_RT5-Jul-06 21:25

5-Jul-06 21:25

When you use CreateWindow it send a WM_CREATE message and if you use
WM_VISIBLE in createwindow then it sends all messages required

whitesky

MAXDWORD

thathvamsi5-Jul-06 20:34

thathvamsi

5-Jul-06 20:34

whats this MAXDWORD?
How do I determine the values for COMMTIMEOUTS?

Re: MAXDWORD

Hamid_RT5-Jul-06 20:38

How to get data from database into a propertypage

5-Jul-06 20:38

See 4.67.1.22. MaxDWord constant[^]

whitesky

Re: MAXDWORD [modified]

thathvamsi5-Jul-06 20:48

thathvamsi

5-Jul-06 20:48

Is setting the ReadIntervalTimeout in COMMTIMEOUTS to MAXDWORD with zeros for both the ReadTotalTimeoutConstant and ReadTotalTimeoutMultiplier members correct? Can this setting of the SetCommTimeOuts be the problem for receiving the same packet everytime in my application.

This is with reference to my previous question posted an hr ago.
Can you help me with this please?

my previous question is :
I have established serial communication with RABBIT3000 (an 8 bit microcontroller).

The packet from the microcontroller is sent to the PC only on the PC demanding it. The demand is sent through one of the variables in the packet sent from PC.

When the PC receives packet from the microcontroller, it receives the correct packet for the first time. During my second request and further,
the Pc keeps receiving the same packet that it received first.
The packet from the microcontroller is updated on some conditions so that its different values in the packet memebers each time it is sent to teh PC on demand.
but when I try sending a different packet (microcontroller updates the packet structure members) to the PC, it still receives only the same packet that it received first and not the updated one.

I receive the packet using Readfile and store the values in a circular buffer.

On the microcontrollers end, the changed values is what is sent in the packet. I have debugged on the microcontroller end and it is fine.
Why is the PC receiving the same packet ?
What could be the possibility? any suggestions?

-- modified at 2:50 Thursday 6th July, 2006

vc++_fragrance5-Jul-06 20:30

vc++_fragrance

5-Jul-06 20:30

Hi,
I have created a project using cview and i have created a propertysheet with two property pages.I have two edit boxes in property page.How can I get the data from tha database.(i have already connected to database)

Please help me.

tejaswini

Re: How to get data from database into a propertypage [modified]

Sarath C5-Jul-06 20:59

Re: How to get data from database into a propertypage

5-Jul-06 20:59

can't you use CRecordset?

See the sample from MSDN[^]

on iterating either you can update to the list box, edit box or a string array ( depends on your application). Anyway this is the method to get the records and its field value. it is not related to property page.

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

<blink>My Blog | Understanding State Patte

-- modified at 3:00 Thursday 6th July, 2006

vc++_fragrance5-Jul-06 21:38

vc++_fragrance

5-Jul-06 21:38

While creating my project(say Sample) using MFCappwizard i connected to a datasourse and instead of CRecordView I used CView.The Appwizard created a SampleSet class which is derived from CRecordSet.

My question is how can I map my control in the property page to database field.If u don't mind can u show a sample code.

thanks in advance.

tejaswini

Re: How to get data from database into a propertypage

Sarath C5-Jul-06 21:42