Hello!
I am trying to convert a char * to a LPWSTR, and I am going absolutly
mad! I can't find anything besides typle L"string" Unfortunetaly I
can't use that...
basicaly the setup is
callbackFromAno therFunctionWhi chMustBeOfChar( char* helpMe) {
//...
foo(some LPWSTR conversion);
}
this is the closest I have come to acomplishing this
char* convertMe = new char[sizeof(material s[i].pTextureFilena me)];
strcpy(convertM e,materials[i].pTextureFilena me);
wchar_t fileNameBuff[1];
int buffSize =
MultiByteToWide Char(CP_ACP,0,c onvertMe,strlen (convertMe),fil eNameBuff,0);
LPWSTR gah = (LPWSTR)new wchar_t[buffSize];
MultiByteToWide Char(CP_ACP,0,c onvertMe,strlen (convertMe),gah ,buffSize);
it converts all of the characters but I get a bunch of junk at the end
and I can't open the file.
Thanks :) 6 38989 Ma************* @gmail.com wrote:
Hello!
I am trying to convert a char * to a LPWSTR, and I am going absolutly
mad! I can't find anything besides typle L"string" Unfortunetaly I
can't use that...
L"string" is an array of wchar_t characters.
The topical question is how to change an array of
char to an array of wchar_t.
char narrowarray[] = "Mairzy doats and dozy doats.";
wchar_t widearray[100]
mbstowcs(widear ray, narrowarray, 100);
LPSTR is a Microsoft abomination
L"string" is an array of wchar_t characters.
The topical question is how to change an array of
char to an array of wchar_t.
char narrowarray[] = "Mairzy doats and dozy doats.";
wchar_t widearray[100]
mbstowcs(widear ray, narrowarray, 100);
LPSTR is a Microsoft abomination
Here Here! Thank you so much for the answer! I now have a curiosity
question if any are willing to indulge, to solve the problem i had
earlier I used
strcpy(convertM e,materials[i].pTextureFilena me);
wchar_t fileNameBuff[1];
int buffSize
=MultiByteToWid eChar(CP_ACP,0, convertMe,strle n(convertMe),fi leNameBuff,0);
LPWSTR gah = (LPWSTR)new wchar_t[buffSize];
MultiByteToWide Char(CP_ACP,0,c onvertMe,strlen (convertMe),gah ,buffSize);
/*LOOK HERE!!*/
wstring final;
for(int i = 0; i < sizeof(convertM e)*2+1;i++) {
final.push_back (gah[i]);
Can anyone tell me, why did I have to use a size of 2 + 1? It makes NO
sence at all to me, I mean I understand a wchar is twice as many bytes,
however in traversing the array does it access each part per byte
(char)? And if so then how does push_back understand it's getting char
and not wchar? Even when it's clearly being fed a wchar... I should
be able to say final.push_back (L"w"); not final.push_back "(L"w");
final.push_back (0); or whatever it be
thanks ;)
Matt
<Ma************ *@gmail.comwrot e in message
news:11******** **************@ h54g2000cwb.goo glegroups.com.. .
Hello!
I am trying to convert a char * to a LPWSTR, and I am going absolutly
mad! I can't find anything besides typle L"string" Unfortunetaly I
can't use that...
basicaly the setup is
callbackFromAno therFunctionWhi chMustBeOfChar( char* helpMe) {
//...
foo(some LPWSTR conversion);
}
Matt,
You should probably post this to: microsoft.publi c.vc.language
Your problem is that you are not copying the terminating null.
Try this :
int buffSize = MultiByteToWide Char(CP_ACP, 0, convertMe,
strlen(convertM e)+1, NULL, 0);
LPWSTR gah = new wchar_t[buffSize];
MultiByteToWide Char(CP_ACP, 0, convertMe, strlen(convertM e)+1, gah,
buffSize);
or, even easier:
int buffSize = (int)strlen(con vertMe) + 1;
LPWSTR gah = new wchar_t[buffSize];
MultiByteToWide Char(CP_ACP, 0, convertMe, buffSize, gah, buffSize);
Now gah will have the null-terminated Unicode string.
Dag
On 25 Nov 2006 07:54:51 -0800, Ma************* @gmail.com wrote in
comp.lang.c++:
Hello!
I am trying to convert a char * to a LPWSTR, and I am going absolutly
mad! I can't find anything besides typle L"string" Unfortunetaly I
can't use that...
basicaly the setup is
callbackFromAno therFunctionWhi chMustBeOfChar( char* helpMe) {
//...
foo(some LPWSTR conversion);
}
this is the closest I have come to acomplishing this
char* convertMe = new char[sizeof(material s[i].pTextureFilena me)];
strcpy(convertM e,materials[i].pTextureFilena me);
wchar_t fileNameBuff[1];
int buffSize =
MultiByteToWide Char(CP_ACP,0,c onvertMe,strlen (convertMe),fil eNameBuff,0);
LPWSTR gah = (LPWSTR)new wchar_t[buffSize];
MultiByteToWide Char(CP_ACP,0,c onvertMe,strlen (convertMe),gah ,buffSize);
it converts all of the characters but I get a bunch of junk at the end
and I can't open the file.
Thanks :)
You say you can't use standard C++ features, and your code uses
non-standard, Windows specific types and API functions, all off-topic
here.
You need to ask this in a Windows group, such as
news:comp.os.ms-windows.program mer.win32.
--
Jack Klein
Home: http://JK-Technology.Com
FAQs for
comp.lang.c http://c-faq.com/
comp.lang.c++ http://www.parashift.com/c++-faq-lite/
alt.comp.lang.l earn.c-c++ http://www.contrib.andrew.cmu.edu/~a...FAQ-acllc.html Ma************* @gmail.com wrote:
>L"string" is an array of wchar_t characters. The topical question is how to change an array of char to an array of wchar_t.
char narrowarray[] = "Mairzy doats and dozy doats."; wchar_t widearray[100] mbstowcs(widea rray, narrowarray, 100);
LPSTR is a Microsoft abomination
Here Here! Thank you so much for the answer! I now have a curiosity
question if any are willing to indulge, to solve the problem i had
earlier I used
strcpy(convertM e,materials[i].pTextureFilena me);
wchar_t fileNameBuff[1];
int buffSize
=MultiByteToWid eChar(CP_ACP,0, convertMe,strle n(convertMe),fi leNameBuff,0);
LPWSTR gah = (LPWSTR)new wchar_t[buffSize];
MultiByteToWide Char(CP_ACP,0,c onvertMe,strlen (convertMe),gah ,buffSize);
/*LOOK HERE!!*/
wstring final;
for(int i = 0; i < sizeof(convertM e)*2+1;i++) {
final.push_back (gah[i]);
Can anyone tell me, why did I have to use a size of 2 + 1? It makes NO
sence at all to me, I mean I understand a wchar is twice as many bytes,
however in traversing the array does it access each part per byte
(char)? And if so then how does push_back understand it's getting char
and not wchar? Even when it's clearly being fed a wchar... I should
be able to say final.push_back (L"w"); not final.push_back "(L"w");
final.push_back (0); or whatever it be
thanks ;)
Matt
MultiByteToWide Char does not return a nul terminated C-style string, just
the converted characters. If you want a C-style string, you need to do the
bookkeeping yourself:
int buffSize = MultiByteToWide Char(
CP_ACP,
0,
materials[i].pTextureFilena me, // no need to copy the src string
-1, // -1 means src string is nul terminated
NULL, // not used when calc'ing size
0);
wchar_t gah = new wchar_t[buffSize + 1]; // translated chars plus trailing
nul
MultiByteToWide Char(
CP_ACP,
0,
materials[i].pTextureFilena me,
-1,
gah,
buffSize);
gah[buffSize] = 0; // make it a C-string
Suppose you did something like this:
char fred[]="fred";
char* newfred = new char[strlen(fred)];
strcpy(newfred, fred);
You'd blow up because you neglected to include the extra nul that strcpy
puts on the end of the string. With MultiByteToWide Char, you need to do the
strcpy-like bookkeeping yourself. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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