C / C++ / MFC Discussion Boards

xulibing6-Aug-04 0:24

6-Aug-04 0:24

There is a question about the API fuctions,which are CreatePolygonRgn() and PtInregin().
When I used CreatePolygonRgn() to create a closed regin, which is surrounded by any closed curve, and then used PtInregin() to judge the points whether in the closed regin, there is a question arised. the left edge of regin is judged out of then regin,and the right edge is judged in the regin. they are contrary. I want to ask this question whether caused by the CreatePolygonRgn(). SOS ! Waits! Confused | :confused:

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Re: SOS! About the API CreatePolygonRgn()

xulibing6-Aug-04 15:00

xulibing

6-Aug-04 15:00

sos!

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Re: SOS! About the API CreatePolygonRgn()

xulibing6-Aug-04 15:01

xulibing

6-Aug-04 15:01

help!

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How to Set HotKeys

zahid_ash6-Aug-04 0:04

zahid_ash

6-Aug-04 0:04

HI ,

I want ot set Hot keys in my Application .
example as when press Ctrl+P = Play a file method call.

I think use Accelerator here.. is it ..

But how , and where i can trap these keys .
to do action that i want
any sample??

thanx

Regards.

Re: How to Set HotKeys

Antony M Kancidrowski6-Aug-04 0:39

Antony M Kancidrowski

6-Aug-04 0:39

Yes you use accelerators for this. You set message handlers to accelerator in the same way you set message handlers to menu items.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: How to Set HotKeys

zahid_ash6-Aug-04 0:46

zahid_ash

6-Aug-04 0:46

i did that but ........... Frown | :(

can u send me any sample ..

thanx

Regards.

i got it

zahid_ash6-Aug-04 0:55

zahid_ash

6-Aug-04 0:55

i got it

thanx

Regards.

Set font for window

rrrado5-Aug-04 23:32

rrrado

5-Aug-04 23:32

I'm creating the CEdit control dynamically using Create() in my dialog.
I need this edit box to use default dialog font, not that ugly big font.
Is this clean way to do this ?

BOOL CMyDialog::OnInitDialog()
{
    ....
    m_myedit.Create(....);
    m_myedit.SetFont(GetFont());
    ...

It is working, and no memory leaks are reported, but I'm unsure about how CFont works - do I need to keep instance of CFont I've used for whole life time of edit box ?

Thank you !

rrrado

Re: Set font for window

Antony M Kancidrowski6-Aug-04 0:21

Antony M Kancidrowski

6-Aug-04 0:21

Since the edit box will only live for the lifetime of the dialog then it is perfectly acceptable to do what you have done.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: Set font for window

rrrado6-Aug-04 0:27

rrrado

6-Aug-04 0:27

Thank you ! Rose | [Rose]

rrrado

Simpe SQL query : WHERE field LIKE........ I'm lost !!!

Danoo5-Aug-04 23:26

Danoo

5-Aug-04 23:26

Hi y'all
I really hope there an SQL guru out there, because I'm trying to do one of the simplest SQL queries but no luck

In my MFC-DAO application, I want to lauch this query:

SELECT * FROM Songs WHERE Title LIKE '%D'

And I cannot make it work at all... any other WHERE query works ok, but the LIKE queries just make me crazy...

Any ideas?

Regards
Daniel

Re: Simpe SQL query : WHERE field LIKE........ I'm lost !!!

Duncan Edwards Jones6-Aug-04 2:08

Duncan Edwards Jones

6-Aug-04 2:08

What wildcard does the databasae you are targetting use? I seem to recall that ms-access uses "*" whereas ansi-SQL uses "%"...

'--8<------------------------
Ex Datis:
Duncan Jones
Merrion Computing Ltd

Re: Simpe SQL query : WHERE field LIKE........ I'm lost !!!

RChin6-Aug-04 2:08

RChin

6-Aug-04 2:08

Danoo wrote:
SELECT * FROM Songs WHERE Title LIKE '%D'

What do you want the statement to return ? This is a valid SQL statement, but I suspect your search string is formatted incorrectly.

If you want to search for all names beginning with "PAL", then you would use:

select * from [mytable] where [field] like 'PAL%'

It might be worth mentioning as well that I'm using ADO to format my queries. I think that DAO, and ACCESS uses '*' instead of '%'. (don't quote me on that though)

I Dream of Absolute Zero

Re: Simpe SQL query : WHERE field LIKE........ I'm lost !!!

David Crow6-Aug-04 2:18

David Crow

6-Aug-04 2:18

RChin wrote:
...ACCESS uses '*' instead of '%'. (don't quote me on that though)

You are correct. Quote away!

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Simpe SQL query : WHERE field LIKE........ I'm lost !!!

Danoo8-Aug-04 21:39

Danoo

8-Aug-04 21:39

Thanks guys, I didn't knew about the wildcard difference between * and %
Regards
Daniel

Re: Simpe SQL query : WHERE field LIKE........ I'm lost !!!

Looney Tunezez6-Aug-04 4:21

Looney Tunezez

6-Aug-04 4:21

Danoo wrote:
SELECT * FROM Songs WHERE Title LIKE '%D'

I am assuming that you want to retrieve all songs information whose titles END with the letter D.
Are you able to run this query through the query analyzer and what is the output?
Because the Query seems correct as far as syntax is concerned, or maybe i just need more caffeine

"Creating tomorrow's _legacy systems today.....
.... One ^CRISIS at a time!" -- Unknown

"If you build it....
.....BUGS will come!" -JB

this.Dispose();

"A _Bug is a piece of <sup> code </sup> that knows whatz its purpose"

How to use CSplitterWnd in non-matrix splitting?

Neeranjan5-Aug-04 23:17

Neeranjan

5-Aug-04 23:17

Hi All,

Using CSplitterWnd class I can split the window in row X column statically.
But I want to split the window as shown below:

|---------------------------|
|      |                    |
|------|                    |
|      |                    |
|      |--------------------|
|      |         |          |
|      |         |          |
|------|--------------------|

How can I do this?
Please, any one has the code for it? any clues?

Thanks & Regards,
Neeranjan

Re: How to use CSplitterWnd in non-matrix splitting?

David Crow6-Aug-04 2:25

David Crow

6-Aug-04 2:25

Neeranjan wrote:
Please, any one has the code for it?

Search MSDN for the GENSPLIT example. It has four panes.

Here is a CP article that has three panes.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

How to debug this ???

rrrado5-Aug-04 23:06

rrrado

5-Aug-04 23:06

My dialog application is running more instances of itself
by calling CreateProcess() to run some tasks (no, i can't use threads).
Is there some way how to debug not only main process, but also child processes, to check memory leaks, see TRACE output, etc ?
Attaching another visual studio instances to all child processes is
lot of work and it can't catch events before before debugger attaching.
Any idea how to do this ?

Thanks !

rrrado

Re: How to debug this ???

jmkhael5-Aug-04 23:52

jmkhael

5-Aug-04 23:52

add the line

__asm int 3

to any intialization function in your process, it will attach the JIT debugger automatically.

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: How to debug this ???

rrrado6-Aug-04 0:32

rrrado

6-Aug-04 0:32

Thank you ! Rose | [Rose]

rrrado

SAFEARRAY in VC/VB/Scripting-Interface

peterchen5-Aug-04 22:32

peterchen

5-Aug-04 22:32

A question how typical Dispatch-Interfaces are designed:

Imagine you provide a Script client with a method returning a safearray, like this:
HRESULT GetData([out, retval] SAFEARRAY ** data)

Do you return a "complete copy", or can/should you return a reference to internal data held by the component?

we are here to help each other get through this thing, whatever it is Vonnegut jr.

sighist || Agile Programming | doxygen

Re: SAFEARRAY in VC/VB/Scripting-Interface

Antony M Kancidrowski6-Aug-04 0:25

Antony M Kancidrowski

6-Aug-04 0:25

I would have thought that you would need to return a copy.

I don't think you can access data across processes just by reference, some sort of accessor functions would be required.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: SAFEARRAY in VC/VB/Scripting-Interface

Milton Karimbekallil6-Aug-04 0:41

Milton Karimbekallil

6-Aug-04 0:41

Ofcourse it will be a reference to the actual memory location allocated from the com server.

A SAFEARRAY we create using by SafeArrayCreate or a BSTR we create by using SysAllocString are independent of the component which creates them. The client can manipulate the server allocated memory location. Remember in the case of a BSTR, the server calls SysAllocString and the client has the responsibility to call release by calling SysFreeString. Its like the server calls new and the client calls delete.

Or it is just like a com object we create inside a com server ( using CComObject ) and a cleint manipulates the properties of that server created object.

hope this helps..

rgds..mil10

Max limit in resource.h file of VC++

PrashantJ5-Aug-04 22:27

PrashantJ

5-Aug-04 22:27

Hi,

We specify the next step number for the resources, commands and control by the following.
_APS_NEXT_RESOURCE_VALUE
_APS_NEXT_COMMAND_VALUE
_APS_NEXT_CONTROL_VALUE

Do we have any way to restrict the numbers or specify the max limit.

eg. I want my resource to have command values from 1 to 100. So
#define _APS_NEXT_COMMAND_VALUE 1 // Next command number

Can I specify somewhere in the resource.h file saying 100 is the max if it goes beyond 100, throw an error?

Thanks,
Prashant.

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