Re: how to display a colored text on controls? - C / C++ / MFC Discussion Boards

KingTermite27-Jun-03 7:03

27-Jun-03 7:03

Yes, it was going to be shared by more than one exe.

We talked at more length with the designer of some other code (drivers) being used which was part of the reason we thought we needed it in a seperate DLL anyway.

It turns out the restrictions were not as deep as we thought and we can stick with the static libraries we already have for the monitors.

Thanks for the input all, regardless.

There are only 10 types of people in this world....those that understand binary, and those that do not.

Re: VC++, classes and DLLs

Iain Clarke, Warrior Programmer27-Jun-03 5:52

Iain Clarke, Warrior Programmer

27-Jun-03 5:52

Simple answer is "Yes, you can make a DLL export a class". It will tie you into only using one
compiler with that DLL, but this isn't a big restriction most of the time.
You'll want to look up __declspec(export) / __declspec(import) in the MSDN library.

But each instance (EXE / DLL) using your DLL would have a fresh "copy" of the DLL, so you would
get lots of monitors. You can do tricks to make them each refer to a single one, but that gets
a bit too deep.

This sounds like a good project for a COM object. This makes a singleton easier to implement
(look on this site for examples), and means you could use the Monitor from VC++, VB
etc.

I would also think about Event Sinks to inform interested programs of changes in the
real world stuff you are monitoring.

If you have to poll the real world to check on a change, try creating a separate thread which
wakes up at regular intervals briefly.

Good luck, as this is a non-trivial learning curve...

Your experience is the opposite of mine. I've been playing with windows for years, and only
recently had to attack an Arm board...

Iain.

how to display a colored text on controls?

olinn27-Jun-03 5:16

olinn

27-Jun-03 5:16

I want to manage some of my radio buttons and some of my static texts have colored text when the dialog receive a certain message, but other controls donot.
How to do this?
thanx.

Re: how to display a colored text on controls?

Joan M27-Jun-03 5:35

Joan M

27-Jun-03 5:35

Take a look at CP, there are lots of articles regarding on this in the Static and into other sections...

Hope this helps...

Re: how to display a colored text on controls?

valikac27-Jun-03 6:08

valikac

27-Jun-03 6:08

What is the problem? What do you want to accomplish?

Kuphryn

Re: how to display a colored text on controls?

olinn27-Jun-03 6:24

olinn

27-Jun-03 6:24

make texts of the control or the static text have color

Re: how to display a colored text on controls?

valikac27-Jun-03 6:29

valikac

27-Jun-03 6:29

One solution is to add a handler for ON_WM_CTLCOLOR.

Kuphryn

Re: how to display a colored text on controls?

olinn27-Jun-03 7:04

olinn

27-Jun-03 7:04

Do you mean I should create a new class, inheriting from the orignal control class, for my control which I want to color its text. Then overridde the OnCtlColor function of the class, use CDC::SetTextColor to set the text color?

I am not good at programing, please say it somewhat detailedly.
Thanks a lot!

Re: how to display a colored text on controls?

Ryan Binns27-Jun-03 13:51

Ryan Binns

27-Jun-03 13:51

olinn wrote:
Do you mean I should create a new class, inheriting from the orignal control class, for my control which I want to color its text. Then overridde the OnCtlColor function of the class, use CDC::SetTextColor to set the text color?

Yes, that would work.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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"

Getting current mouse position

Tommy2k27-Jun-03 4:51

Tommy2k

27-Jun-03 4:51

I want to get my curent mouse position. I can't store is from WM_MOUSEMOVE because that just works for the time the mouse is on certain controll. What would be the best way to do this?

Re: Getting current mouse position

Ryan Binns27-Jun-03 4:57

Ryan Binns

27-Jun-03 4:57

GetCursorPos() gets the current mouse position in screen coordinates.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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: Getting current mouse position

Tommy2k27-Jun-03 5:11

Tommy2k

27-Jun-03 5:11

And how to I convert this point to a point on the control it's on? There's a function for this too but i just cant remember it's name...

Re: Getting current mouse position

Ryan Binns27-Jun-03 5:17

Ryan Binns

27-Jun-03 5:17

ScreenToClient()

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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"

how to acquire system icon(like my computer) through programming?

Anonymous27-Jun-03 4:31

Anonymous

27-Jun-03 4:31

I have to get system icon like "my computer" in my program, what can I do?hope to get help from you, TIA

Re: how to acquire system icon(like my computer) through programming?

Ryan Binns27-Jun-03 4:43

Ryan Binns

27-Jun-03 4:43

LPITEMIDLIST pidl;
if(FAILED(SHGetSpecialFolderLocation(NULL, CSIDL_DRIVES, &pidl)))
{
   // Handle failure
}
SHFILEINFO shfi;
if(SHGetFileInfo((LPCTSTR)pidl, 0, &shfi, sizeof(shfi), SHGFI_PIDL | SHGFI_LARGEICON) == 0)
{
   // Handle failure
}
LPMALLOC lpMalloc;
if(FAILED(SHGetMalloc(&lpMalloc))
{
   // Handle failure
}
lpMalloc->Free(pidl);
// shfi.hIcon should be the icon of My Computer

To get the small icon, use SHGFI_SMALLICON instead of SHGFI_LARGEICON.

Hope this helps,

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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: how to acquire system icon(like my computer) through programming?

tiplip27-Jun-03 17:29

tiplip

27-Jun-03 17:29

With Windows 2000, this function SHGetSpecialFolderLocation is superseded by ShGetFolderLocation. but when I use ShGetFolderLocation, system tells me error as follows:
error C2065: 'SHGetFolderLocation' : undeclared identifier
Error executing cl.exe
would you like to tell me how to deal with this problem? TIA

Re: how to acquire system icon(like my computer) through programming?

Ryan Binns27-Jun-03 17:37

Ryan Binns

27-Jun-03 17:37

#define _WIN32_IE 0x0500 before including shlobj.h

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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: how to acquire system icon(like my computer) through programming?

tiplip27-Jun-03 19:35

tiplip

27-Jun-03 19:35

Dear sir:do you have similar example? why cant I make it although I do as you told me a moment ago? my email:tiplip@msn.com, thanks a lot!

Re: how to acquire system icon(like my computer) through programming?

Ryan Binns28-Jun-03 0:12

Ryan Binns

28-Jun-03 0:12

This is a program that compiles perfectly on my system (VC6, Oct02 SDK, WinXP):

#include "stdafx.h"
#define _WIN32_IE	0x0500
#include <shlobj.h>

int __stdcall WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpCmdLine, int nCmdShow)
{
   LPITEMIDLIST pidl;
   SHGetFolderLocation(NULL, CSIDL_DRIVES, NULL, NULL, &pidl);
   return 0;
}

It doesn't do actually anything useful so you'll need to fill in the rest from the last example I gave you.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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"

adding variables to a struct that were read in from a file

johnstonsk27-Jun-03 4:05

johnstonsk

27-Jun-03 4:05

I have been using the getline() to read in lines from a file and delimiting on commas.
I need to set the items in a struct to these values that I read in.

When I get the data from the struct, I get garbage out.

Am I doing this wrong?

Some of the variables that are read in from the file are doubles and I have been using the atof() function to convert from string to double. But, the only way that the struct will allow me to put them in is if I use the c_str() function.

Thanks,
sj

<br />
<br />
<br />
struct TSimSignal<br />
	{<br />
		double Min[5];	  <br />
		double Max[5];	  <br />
		double Value[5]; <br />
		string Name[5];<br />
		string Unit[5];<br />
	};<br />
<br />
<br />

<br />
void setInitialValues(TSimSignal &s){<br />
<br />
		string name,unit,min,max,value;<br />
<br />
		fin.open("mockData.dat");	<br />
	<br />
		for(int i=0; i<sizeof(s.Name); i++){<br />
			getline(fin, name, ',');<br />
			if(name == "STOP")<br />
				break;<br />
			getline(fin, unit, ',');<br />
			getline(fin, min, ',');<br />
			getline(fin, max, ',');<br />
			getline(fin, value);<br />
			<br />
			<br />
			//s.Name[i] = name;<br />
			//s.Unit[i] = unit;<br />
			//s.Min[i]  = atof(min.c_str());<br />
		        //s.Max[i]  = atof(max.c_str());<br />
		        //s.Value[i]= atof(value.c_str());<br />
		}<br />
		<br />
	//dumpData(s);<br />
<br />
}<br />
<br />

Re: adding variables to a struct that were read in from a file

Ryan Binns27-Jun-03 4:27

Ryan Binns

27-Jun-03 4:27

Just a hint. When you're posting code, replace the '<' and '>' with '<' and '>' respectively, otherwise things like your for loop won't turn out properly.

Your code looks correct. Is the data getting loaded correctly? Can you see the values in the strings with debugger before you store it to the struct? Is fin declared as an ifstream? You might want to post the code with the '<' and '>' changed - it would make it a lot easier to see what it's doing Smile | :)

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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: adding variables to a struct that were read in from a file

johnstonsk27-Jun-03 5:15

johnstonsk

27-Jun-03 5:15

Sorry about that, slipped my mind.

After watching the debugger, I realized the problem lies when I read the data back out of the struct.
I was using the sizeof(s.Name) thinking that it would return 5, but it was returning 80.

OK..... The getline returns a string. I really need my struct to have chars instead of strings.

But as you know; you can't convert a sting to a char.

Is there any way to do this?

I've only been coding for a few months now.

Thanks for the patients,
sj Smile | :)

-----------Right now it is......----------

struct TSimSignal<br />
	{<br />
		double Min[5];	  <br />
		double Max[5];	  <br />
		double Value[5]; <br />
		string Name[5];<br />
		string Unit[5];<br />
	};

-----I really need it to be.....----------

struct TSimSignal<br />
	{<br />
		double Min[5];	  <br />
		double Max[5];	  <br />
		double Value[5]; <br />
		char Name[5];<br />
		char Unit[5];<br />
	};<br />

Re: adding variables to a struct that were read in from a file

Ryan Binns27-Jun-03 5:20

Ryan Binns

27-Jun-03 5:20

johnstonsk wrote:
char Name[5];
char Unit[5];

Actually, it should be:

char *Name[5];
char *Unit[5];

since C strings are a pointer to an array of characters. Then do this:

s.Name[i] = strdup(name.c_str());
s.Unit[i] = strdup(unit.c_str());

Hope this helps,

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

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: adding variables to a struct that were read in from a file

johnstonsk27-Jun-03 5:24

johnstonsk

27-Jun-03 5:24

Thanks

sj

Re: adding variables to a struct that were read in from a file

Rage27-Jun-03 4:47

Rage

27-Jun-03 4:47

@Ryan : After using the "show me all" routine Big Grin | :-D

for(int i=0; i<sizeof(s.Name); i++){
getline(fin, name, ',');
if(name == "STOP")
break;
getline(fin, unit, ',');
getline(fin, min, ',');
getline(fin, max, ',');
getline(fin, value);

~RaGE();

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