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