GetPrivateProfileString

[HellOfMice]

Hi John,


I had a normal time in my bed but did not slept very much...


I am ok with all your sentences. I had not understood. Sorry.


Philippe

[HellOfMice]

From Microsoft

[in] lpDefault A default string. If the lpKeyName key cannot be found in the initialization file, GetPrivateProfileString copies the default string to the lpReturnedString buffer.If this parameter is NULL, the default is an empty string, "".Avoid specifying a default string with trailing blank characters. The function inserts a null character in the lpReturnedString buffer to strip any trailing blanks.

They don't say that the returned string has an empty string if lpKeyName has no value after '='

[John Z]

We are in sync!  Too little sleep!

A default string. If the lpKeyName key cannot be found in the initialization file, GetPrivateProfileString copies the default string to the lpReturnedString buffer.If this parameter is NULL, the default is an empty string, Avoid specifying a default string with trailing blank characters. The function inserts a null character in the lpReturnedString buffer to strip any trailing blanks.


This is case #1 ....

Yes MS never clearly discusses case #3

Cheers,
John Z

[TimoVJL]

Code: [Select]

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdio.h>

int __cdecl main(void)
{
char szBuf[260];
DWORD rc = GetPrivateProfileString("Dialog Box #3", "Dialog Menu ID", "0", szBuf, sizeof(szBuf), "./GetPrivate.ini");
DWORD ec = GetLastError();
printf("%d, %d, '%s'\n", ec, rc, szBuf);
rc = GetPrivateProfileString("Dialog Box #3", "Dialog Menu IDs", NULL, szBuf, sizeof(szBuf), "./GetPrivate.ini");
ec = GetLastError();
printf("%d, %d, '%s'\n", ec, rc, szBuf);
return 0;
}


Code: [Select]

[Dialog Box #3]
Dialog Menu ID=


Code: [Select]

0, 0, ''
2, 0, ''

[John Z]

Excellent as usual TimoVJL!

John Z