47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: msw/private/button.h
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// Purpose: helper functions used with native BUTTON control
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// Author: Vadim Zeitlin
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// Created: 2008-06-07
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// RCS-ID: $Id$
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// Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_MSW_PRIVATE_BUTTON_H_
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#define _WX_MSW_PRIVATE_BUTTON_H_
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namespace wxMSWButton
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{
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// returns BS_MULTILINE if the label contains new lines or 0 otherwise
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inline int GetMultilineStyle(const wxString& label)
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{
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return label.find(_T('\n')) == wxString::npos ? 0 : BS_MULTILINE;
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}
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// update the style of the specified HWND to include or exclude BS_MULTILINE
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// depending on whether the label contains the new lines
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inline void UpdateMultilineStyle(HWND hwnd, const wxString& label)
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{
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// update BS_MULTILINE style depending on the new label (resetting it
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// doesn't seem to do anything very useful but it shouldn't hurt and we do
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// have to set it whenever the label becomes multi line as otherwise it
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// wouldn't be shown correctly as we don't use BS_MULTILINE when creating
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// the control unless it already has new lines in its label)
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long styleOld = ::GetWindowLong(hwnd, GWL_STYLE),
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styleNew;
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if ( label.find(_T('\n')) != wxString::npos )
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styleNew = styleOld | BS_MULTILINE;
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else
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styleNew = styleOld & ~BS_MULTILINE;
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if ( styleNew != styleOld )
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::SetWindowLong(hwnd, GWL_STYLE, styleNew);
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}
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} // namespace wxMSWButton
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#endif // _WX_MSW_PRIVATE_BUTTON_H_
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