Re: Inline Assembler Macros? - C / C++ / MFC Discussion Boards

Dave Bryant14-Jul-03 18:02

14-Jul-03 18:02

1) What is the value of sz? Is it returning a valid size?

2) What is Rectangle() returning? It should return TRUE if successful.

Dave
http://www.cloudsofheaven.org

Re: rect on top of the Text

PJ Arends14-Jul-03 18:01

PJ Arends

14-Jul-03 18:01

actually, CDC::Rectangle() does use the current brush for filling the rectangle. It uses the current pen only to draw the rectangle's edges.

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Re: rect on top of the Text

PJ Arends14-Jul-03 18:09

PJ Arends

14-Jul-03 18:09

I copied your code into my app, and it worked perfectly. It drew a green rectangle over the text.

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Re: rect on top of the Text

spicy_kid200014-Jul-03 18:18

spicy_kid2000

14-Jul-03 18:18

fo me only a green rect is coming

but no text

rect and all giving me return value success

Re: rect on top of the Text

PJ Arends14-Jul-03 18:30

PJ Arends

14-Jul-03 18:30

That is because the rectangle is over the text;) (ie. The text is behind the rectangle) If you shift the rectangle over a little, you will see the text behind it.

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Inline Assembler Macros?

Aidman14-Jul-03 16:37

Aidman

14-Jul-03 16:37

Hi, all

I am trying to write a high performance library by using inline assembler, but I have encountered a irritating problem. It seems that VC++ refuses to accept multi-instructions within the inline asm section for the macro. For example, I can write a inline assembler macro with the single instruction “mov eax, 0” but that’s it, VC++ refuses to accept anymore instructions. The following code might give a better understanding.

#define TestMacro1(x) _asm{ mov eax, 0 } // This works<br />
#define TestMacro2(x) _asm{ mov eax, 0; mov ebx, 0 } // This doesn’t

So what I am trying to do here is to add more then one instruction into the macro, but I don’t know how. Any ideas on how to solve this are highly appreciated.

Thanks in advance.
Aidman » over and out

Re: Inline Assembler Macros?

PJ Arends14-Jul-03 17:39

PJ Arends

14-Jul-03 17:39

just a guess, untested

#define testmacro(x) _asm mov eax, 0 _asm mov ebx, 0

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore98/html/_langref___asm.asp[^]

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Re: Inline Assembler Macros?

Aidman14-Jul-03 22:36

Aidman

14-Jul-03 22:36

Thank you

I am most grateful

Aidman » over and out

Re: Inline Assembler Macros?

Toni7814-Jul-03 19:22

Toni78

14-Jul-03 19:22

My untested guess would be

#define TestMacro2(x) _asm{ mov eax, 0 \
                            mov ebx, 0 }

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

Re: Inline Assembler Macros?

Aidman14-Jul-03 22:56

Aidman

14-Jul-03 22:56

When I try to compile this:

#define TestMacro2(x) _asm{ mov eax, 0 \
                            mov ebx, 0 }

int main() {
	TestMacro2(0);
	return 0;
}

I get the following error and warning with VC++:

warning C4405: 'mov' : identifier is reserved word<br />
error C2400: inline assembler syntax error in 'second operand'; found 'register'

Thanks anyway Smile | :)

Aidman » over and out

Re: Inline Assembler Macros?

Toni7814-Jul-03 23:39

Toni78

14-Jul-03 23:39

I am sorry Aidman that it didn't work. It was just a suggestion that I didn't test, because I was in a hurry.

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

Re: Inline Assembler Macros?

Ryan Binns14-Jul-03 23:18

Ryan Binns

14-Jul-03 23:18

Nope. Won't work. The '\' at the end of the line will cause the two lines to be concatenated, effectively becoming

#define TestMacro2(x) _asm{ mov eax, 0 mov ebx, 0 }

You'll have to use PJ's solution to get the result he's after.

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: Inline Assembler Macros?

Toni7814-Jul-03 23:36

Toni78

14-Jul-03 23:36

It was a shot in the dark. In assembly there are no line delimiters such as ; (I am sure you know this), while PJ's solution seemed to work I thought he could give it a try with my idea. Obviously, it doesn't work. Big Grin | :-D

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

Re: Inline Assembler Macros?

Ryan Binns15-Jul-03 0:48

Ryan Binns

15-Jul-03 0:48

The __asm is its own separator, so __asm mov ax,0 __asm mov bx,0 is perfectly valid code.

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: Inline Assembler Macros?

TheSurrealist15-Jul-03 0:00

TheSurrealist

15-Jul-03 0:00

Hi,

Did you try:

#define TestMacro2(x) { _asm mov eax, 0 _asm mov ebx, 0 }

or even

#define TestMacro2(x) { \
_asm mov eax, 0 \
_asm mov ebx, 0 \
}

Both of the above should work - note the surrounding braces {} are not necessary but are there to make the code look prettier. Smile | :)

HTH

--------------------------------------------

"The mere act of drinking beer in an attempt to measure your tolerance is likely to affect your impression of how many beers you've drunk."

-- The Heineken uncertainty principle.

about using OpenDriver()

gdzfy14-Jul-03 16:27

gdzfy

14-Jul-03 16:27

see:
http://www.codeproject.com/script/comments/forums.asp?msg=550923&forumid=1647#xx550923xx

and

http://www.codeproject.com/script/comments/forums.asp?msg=549039&forumid=1647#xx549039xx
now my test result is :
the clean app works, but the clean DLL does not.

a good man

CPropertySheet Apply button disabled

haritadala14-Jul-03 13:55

haritadala

14-Jul-03 13:55

Hello all

I'm coding an application using CPropertySheet and adding some property pages to this property sheet. The problem the Apply button by default is disabled, is there any way to enable it for all the property pages contained in the property sheet.

If any one knows how to do it, pls help me.

thanks for your time.
Hari.

Re: CPropertySheet Apply button disabled

Andrew Walker14-Jul-03 15:03

Andrew Walker

14-Jul-03 15:03

From my copy of MSDN

CPropertyPage::SetModified() Call to activate or deactivate the Apply Now button.

If you can keep you head when all about you
Are losing theirs and blaming it on you;
If you can dream - and not make dreams your master;
If you can think - and not make thoughts you aim;
Yours is the Earth and everything that's in it.

Rudyard Kipling

Re: CPropertySheet Apply button disabled

haritadala15-Jul-03 2:30

haritadala

15-Jul-03 2:30

Hi Andrew

Thanks for the reply. Now the Apply button is activated whenever I change any of the Page properties.

Thanks for answering my question.

Hari.

Re: CPropertySheet Apply button disabled

Andrew Walker15-Jul-03 2:32

Andrew Walker

15-Jul-03 2:32

That's ok.

Smile | :)

CAsyncSocket usage

caustiK14-Jul-03 11:50

caustiK

14-Jul-03 11:50

i need to send a UDP broadcast message to a network of sensors, and i'm trying to use the CAsyncSocket class. the sensors are accepting text string commands on port 7000. here's the code:

<br />
int errorCode;<br />
<br />
if (!m_udpSocket.Create(0, SOCK_DGRAM))<br />
{<br />
     AfxMessageBox("Create Error");<br />
     errorCode = GetLastError();<br />
}<br />
<br />
// xxxxx is the command<br />
if (m_udpSocket.SendTo("xxxxx", sizeof("xxxxx"), 7000) == SOCKET_ERROR)<br />
{<br />
     AfxMessageBox("Send Error");<br />
     errorCode = GetLastError();<br />
}<br />
<br />
m_udpSocket.Close();<br />

the Create() function is working, but SendTo() gives me an error. the errorCode is 0, but this doesn't seem to match any of the winsock codes on MSDN. am i missing something or leaving something out? i don't know much about networking, but i have to use UDP and the sensors don't support CArchives so i can't use CSocket. any help is greatly appreciated!
(p.s. -- if there is a syntax error or something, it's probably just my typing - i don't have my hands on the actual code atm.)

Re: CAsyncSocket usage

User 665814-Jul-03 12:41

User 6658

14-Jul-03 12:41

replace sizeof("xxxxx") with strlen("xxxxx"), and if it still doesn't work try to put this line before SendTo().

int on = 1, optlen = sizeof(on);
m_udpSocket.SetSockOpt(SO_BROADCAST,&on,optlen);

regards

modified 12-Sep-18 21:01pm.

Re: CAsyncSocket usage

caustiK15-Jul-03 3:02

caustiK

15-Jul-03 3:02

thanks, that answered my question perfectly! Smile | :)

Re: Another Question

caustiK15-Jul-03 10:56

caustiK

15-Jul-03 10:56

i'm having the same problem now with a tcp send.

<br />
if (Connect(host, 9000) == SOCKET_ERROR)<br />
{<br />
AfxMessageBox("Error Connecting");<br />
errorCode = GetLastError();<br />
}<br />
if (Send(command, command.GetLength()) == SOCKET_ERROR)<br />
{<br />
AfxMessageBox("Error Sending Packet");<br />
errorCode = GetLastError();<br />
}<br />

the Connect() seems to work, but i get an error sending. again, the errorCode is 0. is there another option i need to set? thanks, again.

A dll question

dzenan14-Jul-03 11:35

dzenan

14-Jul-03 11:35

Hi,
i'm developing this app using MFC now i want to store some functions(MFC),controls(MFC) ect. in a dll,
i have 2 options
Regular DLL using shared MFC or MFC extension DLL

wich is better to use and what is the difference beetwen them,
thanks

~dzenan~

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