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Added wintable's debugging printers to the new UI code.

This commit is contained in:
Pietro Gagliardi 2015-04-06 12:41:02 -04:00
parent 683d46cdf8
commit 83a49618f9
1 changed files with 99 additions and 0 deletions
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99
debug_windows.c Normal file
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// 25 february 2015
#include "ui_windows.h"
// uncomment the following line to enable debug messages
#define tableDebug
// uncomment the following line to halt on a debug message
#define tableDebugStop
#ifdef tableDebug
#include <stdio.h>
HRESULT logLastError(const char *context)
{
DWORD le;
WCHAR *msg;
int parenthesize = 0;
le = GetLastError();
fprintf(stderr, "%s: ", context);
if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, le, 0, (LPWSTR) (&msg), 0, NULL) != 0) {
fprintf(stderr, "%S (", msg);
// TODO check error
LocalFree(msg);
parenthesize = 1;
}
fprintf(stderr, "GetLastError() == %I32u", le);
if (parenthesize)
fprintf(stderr, ")");
fprintf(stderr, "\n");
#ifdef tableDebugStop
DebugBreak();
#endif
SetLastError(le);
// a function does not have to set a last error
// if the last error we get is actually 0, then HRESULT_FROM_WIN32(0) will return S_OK (0 cast to an HRESULT, since 0 <= 0), which we don't want
// prevent this by returning E_FAIL, so the rest of the Table code doesn't barge onward
if (le == 0)
return E_FAIL;
return HRESULT_FROM_WIN32(le);
}
HRESULT logHRESULT(const char *context, HRESULT hr)
{
WCHAR *msg;
int parenthesize = 0;
fprintf(stderr, "%s: ", context);
// this isn't technically documented, but everyone does it, including Microsoft (see the implementation of _com_error::ErrorMessage() in a copy of comdef.h that comes with the Windows DDK)
if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, (DWORD) hr, 0, (LPWSTR) (&msg), 0, NULL) != 0) {
fprintf(stderr, "%S (", msg);
// TODO check error
LocalFree(msg);
parenthesize = 1;
}
fprintf(stderr, "HRESULT == 0x%I32X", hr);
if (parenthesize)
fprintf(stderr, ")");
fprintf(stderr, "\n");
#ifdef tableDebugStop
DebugBreak();
#endif
return hr;
}
HRESULT logMemoryExhausted(const char *reason)
{
fprintf(stderr, "memory exhausted %s\n", reason);
#ifdef tableDebugStop
DebugBreak();
#endif
return E_OUTOFMEMORY;
}
#else
HRESULT logLastError(const char *reason)
{
DWORD le;
le = GetLastError();
// technically (I think? TODO) we don't need to do this, but let's do this anyway just to be safe
SetLastError(le);
if (le == 0)
return E_FAIL;
return HRESULT_FROM_WIN32(le);
}
HRESULT logHRESULT(const char *reason, HRESULT hr)
{
return hr;
}
HRESULT logMemoryExhausted(const char *reason)
{
return E_OUTOFMEMORY;
}
#endif