C / C++ / MFC

Daniel Turini10-Oct-02 5:30

10-Oct-02 5:30

use this in your code:

ASSERT(pFoo != NULL);

And deliver a debug build version.

My latest articles:
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User 665810-Oct-02 5:59

User 6658

10-Oct-02 5:59

Well, I don't think Microsoft and Intervideo deliver debug versions of their programs tp the customers Confused | :confused:

There must be another way.
Furthermore the assertion dialog (or MessageBox) doesn't look the same like in the MediaPlayer or WinDVD.

modified 12-Sep-18 21:01pm.

Daniel Turini10-Oct-02 6:03

10-Oct-02 6:03

Gregor S. wrote:
Well, I don't think Microsoft and Intervideo deliver debug versions of their programs tp the customers

Well, an ASSERT is suposed to only be present on debug Builds, right?

You can achieve the same by #define _DEBUG on your release build, or creating a proprietary fancy ASSERT macro.

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

Paul M Watt10-Oct-02 6:42

Paul M Watt

10-Oct-02 6:42

While in Debug mode you could use _CrtDbgReport, however that function only exists in the debug version of the C-Runtime libraries. Look at how ATLs ATLASSERT macro works.

#define _ASSERTE(expr) \
do { if (!(expr) && \
(1 == _CrtDbgReport(_CRT_ASSERT, __FILE__, __LINE__, NULL, #expr))) \
_CrtDbgBreak(); } while (0)

For release mode you could simply create your own function that reports the data in a message box, and you would use these preprocessor defines to get the line number and file: __FILE__, __LINE__

Good Luck

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

User 665810-Oct-02 6:50

User 6658

10-Oct-02 6:50

I finally managed to create my own macro, could you please take a look whether it is correct? Is seems to work however Wink | ;)

void _assert_(void *exp)
{
        char err[1024];
        sprintf(err, "Assertion Failed!\n\n\"%s\" in line %i.\nASSERT(%s)", \
                     __FILE__,										\
                      __LINE__,										\
                      exp);											\

        if(exp)
        {
                MessageBox(NULL, err,"Fatal Error", MB_OK|MB_ICONSTOP);
                PostQuitMessage(0);
        }
}

#define _ASSERT_(exp) { _assert_(#exp); }

For testing purposes:

void *pFoo = NULL;
_ASSERT_(pFoo != NULL);

thanks

btw why don't the pre-tags recognise tabs (\t) when I copy and paste my code?

modified 12-Sep-18 21:01pm.

It has been a privilege...

Paul M Watt10-Oct-02 7:46

Paul M Watt

10-Oct-02 7:46

Your macro looks good to me Smile | :)

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Georg Haan10-Oct-02 5:19

Georg Haan

10-Oct-02 5:19

...that's bugging me...
I wrote a message about a CreateProcessAsUser problem a few hours ago titled "Is it a bird? ... No It's Superuser!".

I've managed to narrow the problem, so it should be more easy to anwser...

Given that I know the name of my administrator account and it's password, how can I get SeAssignPrimaryTokenPrivilege, operating from a regular account, in order to succesfully place a call to CreateProcessAsUser?

The idea is to copy the functionality of Linux' su...

Regards,
Georg Haan(.NL)

Re: It has been a privilege...

Daniel Turini10-Oct-02 5:20

write vertical text using GDI+

10-Oct-02 5:20

I think people at Cygwin had the same problem:

http://sources.redhat.com/ml/cygwin/2000-08/msg00445.html[^]

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

Anonymous10-Oct-02 4:33

10-Oct-02 4:33

I use the following two line of codes to write vertical text, it works, but the text is facing the left, reads from the top to the bottom. What shall I do if I like to have the vertical text to face the right, and read from bottom up?

stringFormat.SetFormatFlags(StringFormatFlagsDirectionVertical);
graphics->DrawString(string, -1, &myFont, origin, &stringFormat, &blackBrush);

Thanks.

l a u r e n10-Oct-02 4:41

l a u r e n

10-Oct-02 4:41

if there isnt a flag to set what u want (and i havent done so much text output stuff for a while) u could draw to a memdc and invert / flip it before displaying it

"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
biz stuff about me

Daniel Turini10-Oct-02 4:40

10-Oct-02 4:40

Turn your monitor upside down ? Smile | :)

You can try using a world transformation matrix with Graphics.Transform Property.

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

Roger Allen10-Oct-02 6:20

Roger Allen

10-Oct-02 6:20

OK, I've never used GDI+, but in standard GDI, the font is created with the rotation factor. Check that to see whether the value of 900 for Orientation needs to be changed to 2700 where it is constructued, or visa versa.

Roger Allen
Sonork 100.10016

I think I need a new quote, I am on the prowl, so look out for a soft cute furry looking animal, which is really a Hippo in disguise. Its probably me.

Anonymous10-Oct-02 5:36

10-Oct-02 5:36

Thanks for the reply. The computer is too heavy for me to turn it upside down. Wink | ;)

I tried the following, but for some reason, I only see the ellipse, but no text 'HAPPY DAY!', am I missing something here? Confused | :confused:

Pen pen(Color(255, 0, 0, 255));
PointF origin(x, y);
WCHAR string[256];

x = 200;
y = 200;

graphics->RotateTransform(90.0f);
graphics->TranslateTransform(x, y, MatrixOrderAppend);

wcscpy(string, L"HAPPY DAY!");
graphics->DrawString(string, -1, &myFont, origin,
&stringFormat, &blackBrush);

graphics->DrawEllipse(&pen, 0, 0, 200, 80);

Thanks!

Daniel Turini10-Oct-02 5:56

10-Oct-02 5:56

I'm not a GDI+ guru, but it should work. For me, the only difference is the color your are drawing things. Are you drawing this on what background?

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

Anonymous10-Oct-02 6:06

10-Oct-02 6:06

I am drawing both the text and ellipse on an image that I uploaded using graphics.DrawImage().

I agree that this method shall work because I can see the ellipse, but not the text... weird...

Anyways, thank you again for pointing me to the right direction.

Alois Kraus10-Oct-02 6:27

Alois Kraus

10-Oct-02 6:27

Perhaps You are drawing the ellipse over the text ?

try it in this order

graphics->DrawEllipse(&pen, 0, 0, 200, 80);
graphics->DrawString(string, -1, &myFont, origin, &stringFormat, &blackBrush);

Anonymous10-Oct-02 7:28

10-Oct-02 7:28

Thanks. It doesn't work either.

Anybody ever tried to rotate a line of text before using GDI+?

Daniel Turini10-Oct-02 8:04

10-Oct-02 8:04

Look at this: it's in C#, but it's calling GDI+:

http://www.syncfusion.com/FAQ/WinForms/FAQ_c73c.asp#q644q[^]

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

Anonymous10-Oct-02 8:50

Thank you all for your help.

10-Oct-02 8:50

Hey, you are the best! Thank you so much, Daniel. My code is finally working!!!!!! Big Grin | :-D

I shall call TranslateTransform() first before calling RotateTransform(). Blush | :O

Still, don't know why this doesn't make a difference when drawing the ellipse though... but hey, who cares now... hee hee...

Anonymous10-Oct-02 8:54