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75 lines
1.6 KiB
75 lines
1.6 KiB
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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CorrectCreateIcon.cpp
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Abstract:
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Clears Alpha channel of ICON's XOR-bits to make them look pretty.
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Notes:
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This is a general purpose shim.
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History:
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1/23/2001 a-larrsh Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(CorrectCreateIcon)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(CreateIcon)
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APIHOOK_ENUM_END
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HICON APIHOOK(CreateIcon)(
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HINSTANCE hInstance, // handle to application instance
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int nWidth, // icon width
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int nHeight, // icon height
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BYTE cPlanes, // number of planes in XOR bitmask
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BYTE cBitsPixel, // number of BPP in XOR bitmask
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CONST BYTE *lpbANDbits, // AND bitmask
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CONST BYTE *lpbXORbits // XOR bitmask
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)
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{
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if (lpbXORbits)
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{
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if(cBitsPixel == 32)
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{
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DPFN( eDbgLevelInfo, "Zero Alpha - CreateIcon(hInstance%x, nWidth:%d, nHeight:%d, cPlanes:%d, cBitsPixel:%d, lpbANDbits:%x, lpbXORbits:%x)", hInstance, nWidth, nHeight, (int)cPlanes, (int)cBitsPixel, lpbANDbits, lpbXORbits);
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int n = (nWidth*nHeight);
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DWORD *pXORbits = (DWORD*)lpbXORbits;
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while(n--)
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{
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// Clears the alpha channel of XOR-bits only.
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*(pXORbits++) &= 0x00FFFFFF;
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}
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}
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}
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return ORIGINAL_API(CreateIcon)(hInstance, nWidth, nHeight, cPlanes, cBitsPixel, lpbANDbits, lpbXORbits);
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(USER32.DLL, CreateIcon)
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HOOK_END
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IMPLEMENT_SHIM_END
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