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/**[txh]********************************************************************
Copyright (c) 2002 by Salvador E. Tropea (SET)
Based on code contributed by Anatoli Soltan.
Description:
Win32 Clipboard routines.
***************************************************************************/
#include <tv/configtv.h>
#define Uses_string
#define Uses_TVOSClipboard
#include <tv.h>
#include <tv/win32/win32clip.h>
// I delay the check to generate as much dependencies as possible
#ifdef TVOS_Win32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
// Strings for the errors
const char *TVWin32Clipboard::win32NameError[]=
{
NULL,
NULL
};
void TVWin32Clipboard::Init()
{
TVOSClipboard::copy=copy;
TVOSClipboard::paste=paste;
TVOSClipboard::destroy=destroy;
TVOSClipboard::available=1; // We have 1 clipboard
TVOSClipboard::name="Windows";
// We get the error from windows, so we just change the pointer
TVOSClipboard::errors=1;
TVOSClipboard::nameErrors=win32NameError;
}
void TVWin32Clipboard::getErrorString()
{
if (win32NameError[1])
LocalFree((LPVOID)win32NameError[1]);
LPVOID lpMsgBuf;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL,GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR)&lpMsgBuf,0,NULL);
win32NameError[1]=(const char *)lpMsgBuf;
TVOSClipboard::error=1;
}
void TVWin32Clipboard::destroy()
{
if (win32NameError[1])
LocalFree((LPVOID)win32NameError[1]);
}
char *TVWin32Clipboard::paste(int id, unsigned &len)
{
if (id!=0) return NULL;
char* p=NULL;
HGLOBAL hMem;
if (OpenClipboard(NULL))
{
hMem=GetClipboardData(CF_TEXT);
if (hMem)
{
char *d=(char*)GlobalLock(hMem);
if (d)
{
len=GlobalSize(hMem)-1;
p=new char[len+1];
memcpy(p,d,len);
p[len]=0;
// The returned length doesn't have to be the exact length of the string.
// Reported by Warren H. Holt
len=strlen(p);
GlobalUnlock(hMem);
}
else
getErrorString();
}
else
getErrorString();
CloseClipboard();
}
else
getErrorString();
return p;
}
int TVWin32Clipboard::copy(int id, const char *buffer, unsigned len)
{
if (id!=0) return 0;
if (!len || !buffer) return 1;
HGLOBAL hMem=GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,len+1);
if (!hMem)
{
getErrorString();
return 0;
}
char *d=(char *)GlobalLock(hMem);
if (!d)
{
getErrorString();
GlobalFree(hMem);
return 0;
}
memcpy(d,buffer,len);
d[len]=0;
GlobalUnlock(hMem);
if (OpenClipboard(NULL))
{
EmptyClipboard();
if (SetClipboardData(CF_TEXT,hMem))
{
CloseClipboard();
// Windows now owns the memory, we doesn't have to release it.
return 1;
}
getErrorString();
CloseClipboard();
}
else
getErrorString();
GlobalFree(hMem);
return 0;
}
#endif // TVOS_Win32
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