C / C++ / MFC

Re: Create compatible bitmap

23-Nov-10 1:52

It was what I intended here, since they are grey gradations, unfortunately (now I realize) I made a typo (fixed now).
Sorry for the inconvenience.
Smile | :)

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MacCPlus23-Nov-10 2:25

MacCPlus

23-Nov-10 2:25

Actually, I should have realized that myself reading your first response. But I guess I wasn't quite "there" yet. Wink | ;)

I found out how the color table is supposed to look like by debugging bmiColors[] after having loaded said bitmap file using the code you posted.

Mac

Automation tool for MFC Dialog based applications

kapardhi18-Nov-10 19:37

kapardhi

18-Nov-10 19:37

Hi!
I have developed a MFC Dialog based application, that consists of buttons, combo-boxes, edit box and a button to browse for a file etc, Now i want a free tool, through which i can repeatedly automate/test my app without the involvement of human. so is there asny such free tool in which initially i will show the cursor flow on my app, then the tool will proceed to do the same for required number of times. i searched thru net, i got few like AutoHotkey and winspy ++, but they require some scripts to be written, is there any software (free) which can be used without writing scripts!!

Thanks!

Re: Automation tool for MFC Dialog based applications

David Crow19-Nov-10 4:15

David Crow

19-Nov-10 4:15

See here for ideas.

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How to Load Tiff File using LoadImage?

002comp18-Nov-10 18:03

002comp

18-Nov-10 18:03

Hello Friends

I am using LoadImage to load bitmap but how can I load Tiff File?

Any Ideas?
Thanks & Regards
Yogesh

Luc Pattyn18-Nov-10 18:42

18-Nov-10 18:42

GDI+ won't do it for you. You could look for another library that does; I'm pretty sure GIMP does. Or you could create your own TIFF package. IIRC there might be some licensing issues.

Smile | :)

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CPallini19-Nov-10 0:59

19-Nov-10 0:59

Luc Pattyn wrote:
GDI+ won't do it for you.

GDI+ has built-in encoders and decoders that support the following file types:

BMP
GIF
JPEG
PNG
TIFF

GDI+ reference: "Using Image Encoders and Decoders"[^].
Smile | :)

Luc Pattyn19-Nov-10 1:32

19-Nov-10 1:32

I stand corrected; I don't see what the OP's problem is then.

Smile | :)

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CPallini19-Nov-10 1:55

19-Nov-10 1:55

Are you going to update CP Vanity? I can't leave without.
Plz plz... Big Grin | :-D

Re: OT

Luc Pattyn19-Nov-10 1:57

19-Nov-10 1:57

There probably will be a CP Vanity 2.0 pretty soon after we get a useful web service; there still is hope, it was discussed yesterday.

And why do people insist on discussing CP Vanity everywhere except where it should be discussed, in the article's forum?

Smile | :)

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Re: OT

CPallini19-Nov-10 1:59

Re: the C/C++/MFC forum of all places

19-Nov-10 1:59

I stand corrected.
Smile | :)

Luc Pattyn19-Nov-10 2:07

Re: the C/C++/MFC forum of all places [modified]

19-Nov-10 2:07

BTW: you did see the CP Vanity Lite article by Nish yesterday?

Smile | :)

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CPallini19-Nov-10 2:21

19-Nov-10 2:21

Nope, it is pretty good (Nish rocks): thank you for signaling.
Smile | :)

modified on Friday, November 19, 2010 3:10 PM

Callback Function for Timers in VC6......??

Sarath C18-Nov-10 18:50

Sarath C

18-Nov-10 18:50

See CxImage's CxImageTIF[^] class.

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AmbiguousName18-Nov-10 8:43

AmbiguousName

18-Nov-10 8:43

hello guys..I read somewhere that callback function works better than the WM_TIMER in vc6. So I tried following code but it does't work. whats wrong with it?

BOOL CTimers_CallbackFuncDlg::OnInitDialog()
{
     ..........
     ..........
     //set the first timer
     SetTimer(ID_CLOCK_TIMER,1000,(CALLBACK)&Timer1); //address of the function passed, i also tried without writing CALLBACK
     ..........
}

void CALLBACK CTimers_CallbackFuncDlg::Timer1()//i also tried without writing CALLBACK in function signature
{
	//get current time
	CTime curTime = curTime.GetCurrentTime();

	//format the label and display the time
        m_sTime.Format("%d:%d:%d",curTime.GetHour(),curTime.GetMinute(),curTime.GetSecond()); //m_sTime = variable added using class wizard (to label)

	UpdateData(FALSE);
}

a syntax error is given saying error C2059: syntax error : '__stdcall'

David Crow18-Nov-10 8:52

David Crow

18-Nov-10 8:52

overloaded Name wrote:
SetTimer(ID_CLOCK_TIMER,1000,(CALLBACK)&Timer1);

This could simply be:

SetTimer(ID_CLOCK_TIMER, 1000, Timer1);

You could also pass NULL as the last argument and handle the WM_TIMER messages.

overloaded Name wrote:
void CALLBACK CTimers_CallbackFuncDlg::Timer1()

This either needs to be a static or a global function.

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C^hris L^osinger18-Nov-10 8:52

C^hris L^osinger

18-Nov-10 8:52

you can't use CALLBACK on a class member function.

well, not without doing things like this: Use member functions for C-style callbacks and threads - a general solution[^]

«_Superman_»18-Nov-10 8:57

«_Superman_»

18-Nov-10 8:57

What do you mean by "callback works better"?
You need to find out the exact reason why that statement was made and if it applies to you.

Anyway, I think the error is because the callback signature is not what is expected.
Here is an excerpt from MSDN -

The lpfnTimer callback function need not be named TimerProc, but it must be defined as follows:

void CALLBACK EXPORT TimerProc(
HWND hWnd, // handle of CWnd that called SetTimer
UINT nMsg, // WM_TIMER
UINT nIDEvent // timer identification
DWORD dwTime // system time
);

«_Superman_»
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AmbiguousName18-Nov-10 9:03

AmbiguousName

18-Nov-10 9:03

This is the term that im quoting from a text book. The auther used exactly this term for the procedure.

«_Superman_»18-Nov-10 9:11

«_Superman_»

18-Nov-10 9:11

That is not good enough.
If the author has not explained why it is so, you could probably send him/her an email asking for clarification.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

CPallini18-Nov-10 9:28

18-Nov-10 9:28

overloaded Name wrote:
I read somewhere that callback function works better than the WM_TIMER in vc6

That's vague and without foundations, I think can't be the rationale for your choice. Probably the WM_TIMER message would fit your needs as well.

overloaded Name wrote:
void CALLBACK CTimers_CallbackFuncDlg::Timer1()

As David already suggested that cannot be a standard (a instance) method of the class, it must be either a static method or, simply, a function.

Smile | :)

AmbiguousName18-Nov-10 9:45

AmbiguousName

18-Nov-10 9:45

Since I already told here..I read it somewhere. According to the author;

Timers are placed into the application queue (only if application is idle). If the application is not idle and has been busy (due to which several timer event messages can be missed by the app), windows places only one timer event in the application queue. Hence Windows does not sends all the timer events to the application when it was busy (and no matter how many timer messages have been missed, it still places only one timer event in the queue).

This was the reason (which from the feedback so far, I think is wrong) I was trying to write a function.

CPallini18-Nov-10 9:59

18-Nov-10 9:59

As far as I know, the callback isn't called in the context of another thread, hence, if your main thread is busy, then it wouldn't be called either. Smile | :)