C / C++ / MFC

Checking to see if filename entered

4-Oct-03 6:28

Look up SetTimer() and KillTimer()

--Mike--
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CP SearchBar v2.0.2 released

Re: Timers in MFC

Ted Ferenc4-Oct-03 7:41

Ted Ferenc

4-Oct-03 7:41

CreateWaitableTimer() and SetWaitableTimer() can also be used

"Committee--a group of men who individually can do nothing but as a group decide that nothing can be done." - Fred Allen

Re: Timers in MFC

BoudewijnEctor4-Oct-03 9:15

BoudewijnEctor

4-Oct-03 9:15

Thanks you everybody; after reading your hints, I finally succeeded in building this part of the app!
Poke tongue | ;-P

;)

NewHSKid4-Oct-03 5:33

NewHSKid

4-Oct-03 5:33

Hi all,

I am having trouble coding this and wanted to know how to check if a user enters a filename to open. Basically I want to check to make sure the file name is not all spaces and that it is not blank. I am not using CFileDialog right now, just have a editbox and a browse button that i got from a CP article.

Does anyone have code out there that does this? Can someone lead me in the right direction?

Thanks for all your help .

Jimmy

Just cause I am 15, doesn't mean I'm dumb! (I'll really be 4 on Feb. 29...the year 2004)

Re: Checking to see if filename entered

Terry O'Nolley4-Oct-03 6:26

Terry O'Nolley

4-Oct-03 6:26

You can get at the string in the edit box with

CString FileName;

MyEditCOntrol.GetWindowText(&FileName);

You can then perform all of the validation on FileName.

To verify the edit box wasn't blank:

if(!FileName.Getlength())
//handle error here - zero length filename

To verify that no illegal filename characters were entered:

CString InvalidFilenameChars = ""; // put all invalid filename chars in this string

if(FileName.FindOneOf(InvalidFilenameChars) != -1)
//handle error here - filename contains invalid character

There may be a pre-built MFC way of handling all of this.........

Information extraction

Member 6221644-Oct-03 5:15

Member 622164

4-Oct-03 5:15

:(hello

I need the source code in c++, for information extraction from html tables , and to generate with those data a XML document.

Please help me

Marco Javier Suarez Baron

Re: Information extraction

Neville Franks4-Oct-03 11:48

Neville Franks

4-Oct-03 11:48

One way is to use the MSHTML control and iterate the HTML Elements. Have a look at the articles here on using the HTML control and on MSDN.

Another option is HTMLTree http://homepage.mac.com/pauljlucas/software/html_tree/[^] however this is GPL, which may be a problem for you.

And finally Google search: HTML parser.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Type Variable

Aidman4-Oct-03 5:09

Aidman

4-Oct-03 5:09

Hi,

I am in need of a variable that can hold a type (variable-type ex: int or double) and not a value of the specific type, just the type. Something that works like this:

VARTYPE Type;

Type = int; // The type is integer.

switch (Type) {
	case short: // The type is short.
	//...
	break;
	case int: // The type is integer.
	//...
	break;
	case float: // The type is float.
	//...
	break;
	case double: // The type is double.
	//...
	break;
}

I know I can simply declare a bunch of constant numbers, who each represents a variable type. But that would be very non-optimal if there already exists an easier way. Could I use templates to achieve this or the use of preprocessors/macros? Just to be clear, I am looking for a variable that only contains a type and not a value.

Any help or tips are most appreciated. Smile | :)

Aidman » over and out
We haven't inherited Earth from our parents, instead we have borrowed her from our children; an old Indian saying.

includeh104-Oct-03 5:22

includeh10

4-Oct-03 5:22

almost:
switch(sizeof(type))
{
case sizeof(short): //need pre-defined
break;

includeh10

Ian Darling4-Oct-03 5:27

4-Oct-03 5:27

In most 32 bit C++ compilers, float and int are both sizeof 4, so how's that going to work?

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

Ian Darling4-Oct-03 5:30

4-Oct-03 5:30

Off the top of my head, I believe some of Andrei Alexandrescu's work (Loki??) covers situations like this, although I don't have a reference to hand.

Also, the VARIANT struct already has some associated defines that could be used as a base for this - eg VT_I4, VT_UI1, VT_BSTR, etc...

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

Neville Franks4-Oct-03 11:53

Neville Franks

4-Oct-03 11:53

There is also Boost Any which may be of interest: http://www.boost.org/doc/html/any.html[^]

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Michael Dunn4-Oct-03 6:42

4-Oct-03 6:42

Look up typeid and the type_info struct

--Mike--
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber
CP SearchBar v2.0.2 released

Ian Darling4-Oct-03 7:57

4-Oct-03 7:57

I forgot about those Blush | :O

Obviously been too long since I did any major work in C++. Of course, IIRC, typeid and type_info are platform dependant, so code isn't necessarily portable, right?

/goes into a bunker with a C++ compiler and a copy of Stroustrup.

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

Michael Dunn4-Oct-03 8:05

4-Oct-03 8:05

Ian Darling wrote:
Of course, IIRC, typeid and type_info are platform dependant, so code isn't necessarily portable, right?

Not sure what you mean... Comparing type_infos generated on two different platforms probably won't work, if that's what you had in mind.

--Mike--
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber
CP SearchBar v2.0.2 released

Ian Darling4-Oct-03 8:12

4-Oct-03 8:12

Michael Dunn wrote:
Not sure what you mean... Comparing type_infos generated on two different platforms probably won't work, if that's what you had in mind.

Nope. Just that you couldn't rely on certain things about the type_info implementation always being the same across platforms, for example, what typeinfo::name() returns.

My reading of "Design and Evolution of C++" suggests that there is scope for differing definitions of the type_info class on different C++ platforms.

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

Michael Dunn4-Oct-03 8:21

4-Oct-03 8:21

Ok, I see. Honestly, I've never used type_info so I'm just repeating the docs here. Wink | ;)

--Mike--
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber
CP SearchBar v2.0.2 released

Aidman4-Oct-03 8:29

Aidman

4-Oct-03 8:29

Thanks! Althougth I am not quite sure if I might be able to use it as I hoped, it is still a better alternative then declaring your own Type-Ids. Smile | :)

Aidman » over and out
We haven't inherited Earth from our parents, instead we have borrowed her from our children; an old Indian saying.