C / C++ / MFC

Re: view the picture in other path by picture viewer

28-Aug-06 4:07

sdhtyjnniutnbjnhbghb wrote:
I call
pimg.exe and it open the picture viewer in \\My Documents\\My Pictures.
How could I open picture viewer in other path??

Does pimg.exe support command-line arguments?

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

sdhtyjnniutnbjnhbghb28-Aug-06 15:38

sdhtyjnniutnbjnhbghb

28-Aug-06 15:38

I search the megneto document.
One topic is as below:

Setting the Default Browse Directory
The command line executable pimg is used to specify the default browse directory. This is done by using the option -directory: followed by the name of the desired default directory:
pimg -directory:<directory_path>

But how can use that when the appilcation is running in O.S.??

Any suggestion is useful!! Thanks!!

Re: view the picture in other path by picture viewer

David Crow29-Aug-06 2:45

Need to end a string with null instead of \r\n

29-Aug-06 2:45

sdhtyjnniutnbjnhbghb wrote:
But how can use that...

Use either ShellExecute() or CreateProcess().

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

samkook27-Aug-06 11:26

Re: Need to end a string with null instead of \r\n [modified]

27-Aug-06 11:26

How can I do that? I tried the function replace, but it doesn't work and I also tried to add \0 to a string before i Added \r\n to the text, but it's not working(Not sure why). I'm starting to run out of idea.

Waldermort27-Aug-06 11:41

Re: Need to end a string with null instead of \r\n [modified]

27-Aug-06 11:41

"This is a null terminated string\0"

You can use the strtok() functions to find \r\n, though it would help if we knew how you are creating the string

char *str = new char [10];
strcpy(str,"hello\r\n");
int x = strlen(str);
str[x-2] = '\0';
x = strlen(str);
delete[] str;

Works for me.

-- modified at 17:46 Sunday 27th August, 2006

samkook27-Aug-06 11:52

27-Aug-06 11:52

I'm reading the string from a binary file and i replace the null at the end of each lines by \r\n for display purpose in an editbox. After I'm taking the text from the editbox and I want to put it back into the binary file.

here is what i currently have to write it.

The vars:
CFile fVampFile;
String * strInfo = "";
char * cInfo = "";
int iEnd;

The code:
strInfo = eSpeech->Text;
strInfo->Replace("\r\n","\0");
cInfo = (char*)Marshal::StringToHGlobalAnsi(strInfo).ToPointer();
iEnd = strlen(cInfo);
fVampFile.Write(cInfo,iEnd);

-- modified at 17:58 Sunday 27th August, 2006

I forgot to mention this, but the string can have 3 /r/n in it at different places, because each string can have up to 3 sentences in it and all 3 need to end with null.

and the code you gave me removes the /r/n but null isn't added.

Waldermort27-Aug-06 12:00

27-Aug-06 12:00

Is thst String a CString or a basic_string? The CString class has a TrimRight() member that you might want to try.

samkook27-Aug-06 12:19

27-Aug-06 12:19

It won't work, because i can have up to 3 /r/n in the string.

Also do you know if CFile.write will write the null to the file? I was wondering if it could be the reason why I can't add a null to a string.

fefe.wyx27-Aug-06 14:42

fefe.wyx

27-Aug-06 14:42

This function should write everything, but the terminating '\0' is not included in string length.
So try fVampFile.Write(cInfo,iEnd + 1);

David Crow28-Aug-06 4:11

28-Aug-06 4:11

samkook wrote:
It won't work, because i can have up to 3 /r/n in the string.

Which means you should be using strtok() and not strlen().

samkook wrote:
Also do you know if CFile.write will write the null to the file? I was wondering if it could be the reason why I can't add a null to a string.

CFile, and its methods, has no bearing on how you manipulate a string.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

David Crow28-Aug-06 4:14

28-Aug-06 4:14

samkook wrote:
strInfo->Replace("\r\n","\0");

This obviously will not work. You can't use string-related functions, which expect nul-terminated strings, to add/find/replace a nul character. Doing do effectively results in nothing happening.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

kakan27-Aug-06 22:51

kakan

27-Aug-06 22:51

One way to do it. It removes any number of trailing CR and/or LF combinations:

<br />
		char str[20]; // or char *str = new char [20];<br />
		int index;<br />
<br />
		strcpy(str, "hello\r\n");<br />
		index = strlen(str);<br />
<br />
		if(index) {<br />
			index--;<br />
			for(; index >= 0; index--) {<br />
				if(str[index] == '\r' || str[index] == '\n') str[index] = '\0';<br />
				else break;<br />
			}<br />
		}<br />
<br />
		// str is now stripped from trailing CR LF combinations and NULL terminated<br />
<br />
		// If alloced with new<br />
		// delete[] str;<br />

Else, you can use a CString or str

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

samkook28-Aug-06 7:02

28-Aug-06 7:02

Thanks everyone for all your help, I now have everything to solve this problem. Finally, I will separate the sentences, because it will be simpler and thanks fefe for pointing to me that null wasn't included in the string length.

And one last thing, the code you gave me kakan ended with only null written in the file, i'm not sure what was wrong. Also if I understand correctly, it will write two null at the end of each sentence and it's very important that it be only one.

And sorry if there are thing that doesn't make sence in my post, i'm really tired and english is not my first language.

kakan28-Aug-06 19:31

kakan

28-Aug-06 19:31

Hello.

I just debugged the code I gave you and it works as it should.
It removes any CR LF combinations from the end of the string.

The result is stored in str (assuming you do not delete the string before writing it to the file!).

My code will replace all terminating CR and LF with nulls in the buffer, that's right. But when you later uses the resulting buffer, it's the first null char that counts. Simply because a null char is seen as a string terminator.

If you want the length of the resulting string, just use strlen() (or it's variants).

PS.
English isn't my native lingo either.

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Screen Sizes

BlitzPackage27-Aug-06 9:58

BlitzPackage

27-Aug-06 9:58

Hello All,

I have a question. I am about to create some software. I plan on using MFC MDI with two form views. My question regards sizing it so that it looks appropriate on different screens since users tend to have different screen resolutions. What is the best strategy to ensure that my software shows up properly on different screen settings? How can I make the contents of my form view (and any view for that matter) scale properly within limits?

Any help you can provide would be very helpful.

Waldermort27-Aug-06 10:58

27-Aug-06 10:58

You should take a look at the GetDeviceCaps() function which will give you the sizes you need to know about for the screen. A common method of creating a correct sized window is to scale it according to the size of the font used.

BlitzPackage27-Aug-06 15:35

BlitzPackage

27-Aug-06 15:35

Thanks for your reply. Can you elaborate a little bit more or point me to a source that outlines that strategy.

Thanks again,
BP

Hamid_RT27-Aug-06 21:08

Hamid_RT

27-Aug-06 21:08

See here[^] maybe it is some helpful to you

WhiteSky

BlitzPackage28-Aug-06 2:49

BlitzPackage

28-Aug-06 2:49

Thank you very much. It looks like that article will be of great help me.

BP

wclen returning wrong value

Hamid_RT28-Aug-06 4:20

Hamid_RT

28-Aug-06 4:20

I glad that its good for you

WhiteSky

Waldermort27-Aug-06 8:37