andlabs-ui/new/text_windows.c

62 lines
1.5 KiB
C

// 9 april 2015
#include "uipriv_windows.h"
#define MBTWC(str, wstr, bufsiz) MultiByteToWideChar(CP_UTF8, 0, str, -1, wstr, bufsiz)
WCHAR *toUTF16(const char *str)
{
WCHAR *wstr;
int n;
n = MBTWC(str, NULL, 0);
if (n == 0)
logLastError("error figuring out number of characters to convert to in toUTF16()");
wstr = (WCHAR *) uiAlloc(n * sizeof (WCHAR), "WCHAR[]");
if (MBTWC(str, wstr, n) != n)
logLastError("error converting from UTF-8 to UTF-16 in toUTF16()");
return wstr;
}
#define WCTMB(wstr, str, bufsiz) WideCharToMultiByte(CP_UTF8, WC_NO_BEST_FIT_CHARS, wstr, -1, str, bufsiz, NULL, FALSE)
char *toUTF8(const WCHAR *wstr)
{
char *str;
int n;
n = WCTMB(wstr, NULL, 0);
if (n == 0)
logLastError("error figuring out number of characters to convert to in toUTF8()");
// TODO does n include the null terminator?
str = (char *) uiAlloc((n + 1) * sizeof (char), "char[]");
if (WCTMB(wstr, str, n + 1) != n)
logLastError("error converting from UTF-16 to UTF-8 in toUTFF8()");
return str;
}
WCHAR *windowText(HWND hwnd)
{
int n;
WCHAR *text;
DWORD le;
SetLastError(0);
n = GetWindowTextLengthW(hwnd);
if (n == 0) {
le = GetLastError();
SetLastError(le); // just in case
if (le != 0)
logLastError("error getting window text length in windowText()");
}
// TODO null terminator?
text = (WCHAR *) uiAlloc((n + 1) * sizeof (WCHAR), "WCHAR[]");
if (GetWindowTextW(hwnd, text, n + 1) != n)
logLastError("error getting window text in windowText()");
return text;
}
void uiFreeText(char *text)
{
uiFree(text);
}