83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/**************************************************************************
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*
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* Copyright (c) 2000 Microsoft Corporation
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*
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* Module Name:
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*
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* Helper for GDI+ initialization
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*
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* Abstract:
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*
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* This code initializes GDI+ (with default parameters).
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* The code is specific to our compiler, because it uses #pragma to
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* get our code to be initialized before the app's other global objects
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* (important when apps make global GDI+ objects.)
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*
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* Notes:
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*
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* A test app should include this in *just one* of its .cpp files.
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* It should check gGdiplusInitHelper.IsValid() in its main function,
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* and abort if it returns FALSE.
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*
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* We use "#pragma code_seg()", which resets the code segment to "whatever
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* it was when compilation began" (MSDN). In other words, we stomp on whatever
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* the code segment might have been changed to before this file was included.
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* You don't need to worry about this unless you use "#pragma code_seg"
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* yourself, in the file which includes this one.
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*
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* Created:
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*
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* 09/18/2000 agodfrey
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* Created it.
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*
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**************************************************************************/
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#include <objbase.h>
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#include "gdiplus.h"
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// Disable the stupid warning that says we have a "lib" code segment.
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#pragma warning( push )
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#pragma warning( disable : 4073 )
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// Make a separate code segment, and mark it as a "library initialization"
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// segment
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#pragma code_seg( "GpInit" )
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#pragma init_seg( lib )
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class GdiplusInitHelper
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{
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public:
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GdiplusInitHelper() : gpToken(0), Valid(FALSE)
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{
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Gdiplus::GdiplusStartupInput sti;
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if (Gdiplus::GdiplusStartup(&gpToken, &sti, NULL) == Gdiplus::Ok)
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{
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Valid = TRUE;
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}
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}
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~GdiplusInitHelper()
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{
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if (Valid)
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{
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Gdiplus::GdiplusShutdown(gpToken);
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}
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}
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BOOL IsValid() { return Valid; }
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private:
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ULONG_PTR gpToken;
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BOOL Valid;
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};
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// Declare the global in this code segment, so that it is initialized before/
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// destroyed after the app's globals.
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GdiplusInitHelper gGdiplusInitHelper;
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// Reset the code segment to "whatever it was when compilation began".
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#pragma code_seg()
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#pragma warning( pop )
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