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/**************************************************************************
*
* Copyright (c) 2000 Microsoft Corporation
*
* Module Name:
*
* Gdiplus init
*
* Abstract:
*
* GDI+ startup/shutdown API's
*
* Created:
*
* 09/02/2000 agodfrey
* Created it.
*
**************************************************************************/
#ifndef _GDIPLUSINIT_H
#define _GDIPLUSINIT_H
//************************************************************************
#if _FX_COMPILER_ == _FX_VC6_
typedef unsigned long ULONG_PTR, *PULONG_PTR; //johnson add here.
#endif
//************************************************************************
// Used for debug event notification (debug builds only)
enum DebugEventLevel
{
DebugEventLevelFatal,
DebugEventLevelWarning
};
// Callback function that GDI+ can call, on debug builds, for assertions
// and warnings.
typedef VOID (WINAPI *DebugEventProc)(DebugEventLevel level, CHAR *message);
// Notification functions which the user must call appropriately if
// "SuppressBackgroundThread" (below) is set.
typedef Status (WINAPI *NotificationHookProc)(OUT ULONG_PTR *token);
typedef VOID (WINAPI *NotificationUnhookProc)(ULONG_PTR token);
// Input structure for GdiplusStartup()
struct GdiplusStartupInput
{
UINT32 GdiplusVersion; // Must be 1
DebugEventProc DebugEventCallback; // Ignored on free builds
BOOL SuppressBackgroundThread; // FALSE unless you're prepared to call
// the hook/unhook functions properly
BOOL SuppressExternalCodecs; // FALSE unless you want GDI+ only to use
// its internal image codecs.
GdiplusStartupInput(
DebugEventProc debugEventCallback = NULL,
BOOL suppressBackgroundThread = FALSE,
BOOL suppressExternalCodecs = FALSE)
{
GdiplusVersion = 1;
DebugEventCallback = debugEventCallback;
SuppressBackgroundThread = suppressBackgroundThread;
SuppressExternalCodecs = suppressExternalCodecs;
}
};
// Output structure for GdiplusStartup()
struct GdiplusStartupOutput
{
// The following 2 fields are NULL if SuppressBackgroundThread is FALSE.
// Otherwise, they are functions which must be called appropriately to
// replace the background thread.
//
// These should be called on the application's main message loop - i.e.
// a message loop which is active for the lifetime of GDI+.
// "NotificationHook" should be called before starting the loop,
// and "NotificationUnhook" should be called after the loop ends.
NotificationHookProc NotificationHook;
NotificationUnhookProc NotificationUnhook;
};
// GDI+ initialization. Must be called before GDI+ API's are used.
//
// token - may not be NULL - accepts a token to be passed in the corresponding
// GdiplusShutdown call.
// input - may not be NULL
// output - may be NULL only if input->SuppressBackgroundThread is FALSE.
extern "C" Status WINAPI GdiplusStartup(
OUT ULONG_PTR *token,
const GdiplusStartupInput *input,
OUT GdiplusStartupOutput *output);
// GDI+ termination. Must be called before GDI+ is unloaded. GDI+ API's may not
// be called after this.
extern "C" VOID WINAPI GdiplusShutdown(ULONG_PTR token);
#endif
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