Source code of Windows XP (NT5)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

79 lines
2.1 KiB

// UsrCtl32.cpp : Defines the entry point for the DLL application.
//
#include "ctlspriv.h"
#pragma hdrstop
#include "UsrCtl32.h"
#define AWS_MASK (BS_TYPEMASK | BS_RIGHT | BS_RIGHTBUTTON | \
WS_HSCROLL | WS_VSCROLL | SS_TYPEMASK)
VOID AlterWindowStyle(HWND hwnd, DWORD mask, DWORD flags)
{
ULONG ulStyle;
if (mask & ~AWS_MASK)
{
TraceMsg(TF_STANDARD, "AlterWindowStyle: bad mask %x", mask);
return;
}
ulStyle = GetWindowStyle(hwnd);
mask &= AWS_MASK;
ulStyle = (ulStyle & (~mask)) | (flags & mask);
SetWindowLong(hwnd, GWL_STYLE, ulStyle);
}
LONG TestWF(HWND hwnd, DWORD flag)
{
LPDWORD pdwWW;
// GWLP_WOWWORDS returns a pointer to the WW struct in the hwnd.
// We're interest in the first four DWORDS: state, state2,
// ExStyle (exposed, although not all bits, by GetWindowExStyle),
// and style (exposed by GetWindowStyle).
//
// The parameter flag, contains information on how to pick the field
// we want and how to build the WS_xxx or WS_EX_xxx we want to
// check for.
//
// See UsrCtl32.h for more details on how this is done.
//
pdwWW = (LPDWORD)GetWindowLongPtr(hwnd, GWLP_WOWWORDS);
if ( pdwWW )
{
INT iField; // the field we want
INT iShift; // how many bytes to shift flag
LONG ulMask; // WS_xxx or WS_EX_xxx flag
iField = ( HIBYTE(flag) & 0xFC ) >> 2;
iShift = HIBYTE(flag) & 0x03;
ulMask = LOBYTE(flag) << (iShift << 3);
ASSERT( 0 <= iField && iField < 4 );
return pdwWW[iField] & ulMask;
};
return 0;
}
UINT GetACPCharSet()
{
static UINT charset = (UINT)~0;
CHARSETINFO csInfo;
if (charset != (UINT)~0) {
return charset;
}
// Sundown: In the TCI_SRCCODEPAGE case, the GetACP() return value is zero-extended.
if (!TranslateCharsetInfo((DWORD*)UIntToPtr( GetACP() ), &csInfo, TCI_SRCCODEPAGE)) {
return DEFAULT_CHARSET;
}
charset = csInfo.ciCharset;
UserAssert(charset != (UINT)~0);
return csInfo.ciCharset;
}