mirror of
https://github.com/reactos/reactos.git
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96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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* PROJECT: ReactOS Shell
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* LICENSE: GPL - See COPYING in the top level directory
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* PURPOSE: Misc shell helper functions
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* COPYRIGHT: Copyright 2015 Giannis Adamopoulos
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*/
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#include "precomp.h"
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/* http://undoc.airesoft.co.uk/shlwapi.dll/SHForwardContextMenuMsg.php */
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HRESULT WINAPI SHForwardContextMenuMsg(IUnknown* pUnk, UINT uMsg, WPARAM wParam,
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LPARAM lParam, LRESULT* pResult, BOOL useIContextMenu2)
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{
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HRESULT hr;
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IContextMenu3* pcmenu3;
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IContextMenu2* pcmenu2;
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/* First try to use the IContextMenu3 interface */
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hr = IUnknown_QueryInterface(pUnk, &IID_IContextMenu3, (void**)&pcmenu3);
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if (SUCCEEDED(hr))
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{
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hr = IContextMenu3_HandleMenuMsg2(pcmenu3, uMsg, wParam, lParam, pResult);
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IContextMenu3_Release(pcmenu3);
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return hr;
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}
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/* Return failure if we can't use the IContextMenu2 interface */
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if(!useIContextMenu2)
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return hr;
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/* Now try to use the IContextMenu2 interface */
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hr = IUnknown_QueryInterface(pUnk, &IID_IContextMenu2, (void**)&pcmenu2);
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if (FAILED(hr))
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return hr;
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hr = IContextMenu2_HandleMenuMsg(pcmenu2, uMsg, wParam, lParam);
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IContextMenu2_Release(pcmenu2);
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return hr;
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}
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/* http://undoc.airesoft.co.uk/shlwapi.dll/SHAreIconsEqual.php */
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BOOL WINAPI SHAreIconsEqual(HICON hIcon1, HICON hIcon2)
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{
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ICONINFO iconInfo1, iconInfo2;
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BITMAP bm1, bm2;
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BOOL bSame = FALSE;
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if (!hIcon1 || !hIcon2)
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return FALSE;
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if (!GetIconInfo(hIcon1, &iconInfo1))
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return FALSE;
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if (!GetIconInfo(hIcon2, &iconInfo2))
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{
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DeleteObject(iconInfo1.hbmColor);
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DeleteObject(iconInfo1.hbmMask);
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return FALSE;
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}
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GetObjectW(iconInfo1.hbmColor, sizeof(bm1), &bm1);
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GetObjectW(iconInfo2.hbmColor, sizeof(bm2), &bm2);
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if (bm1.bmWidth == bm2.bmWidth && bm1.bmHeight == bm2.bmHeight)
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{
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BITMAPINFO bmi = { { sizeof(bmi), bm1.bmWidth, bm1.bmHeight, 1, 32 } };
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HDC hdc = GetDC(0);
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SIZE_T size = bm1.bmWidth * bm1.bmHeight * 4;
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BYTE *data1, *data2;
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data1 = HeapAlloc(GetProcessHeap(), 0, size);
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data2 = HeapAlloc(GetProcessHeap(), 0, size);
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if (data1 && data2)
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{
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if (GetDIBits(hdc, iconInfo1.hbmColor, 0, bm1.bmHeight, data1, &bmi, DIB_RGB_COLORS) &&
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GetDIBits(hdc, iconInfo2.hbmColor, 0, bm2.bmHeight, data2, &bmi, DIB_RGB_COLORS))
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{
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bSame = memcmp(data1, data2, size) == 0;
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}
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}
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HeapFree(GetProcessHeap(), 0, data1);
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HeapFree(GetProcessHeap(), 0, data2);
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ReleaseDC(NULL, hdc);
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}
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DeleteObject(iconInfo1.hbmColor);
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DeleteObject(iconInfo1.hbmMask);
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DeleteObject(iconInfo2.hbmColor);
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DeleteObject(iconInfo2.hbmMask);
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return bSame;
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}
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