Qt 4.8
qsystemlibrary_p.h
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41 
42 #ifndef QSYSTEMLIBRARY_P_H
43 #define QSYSTEMLIBRARY_P_H
44 
45 #include <QtCore/qglobal.h>
46 #ifdef Q_OS_WIN
47 #include <qt_windows.h>
48 #include <QtCore/qstring.h>
49 
51 
53 {
54 public:
55  explicit QSystemLibrary(const QString &libraryName)
56  {
57  m_libraryName = libraryName;
58  m_handle = 0;
59  m_didLoad = false;
60  }
61 
62  explicit QSystemLibrary(const wchar_t *libraryName)
63  {
65  m_handle = 0;
66  m_didLoad = false;
67  }
68 
69  bool load(bool onlySystemDirectory = true)
70  {
71  m_handle = load((const wchar_t *)m_libraryName.utf16(), onlySystemDirectory);
72  m_didLoad = true;
73  return (m_handle != 0);
74  }
75 
76  bool isLoaded()
77  {
78  return (m_handle != 0);
79  }
80 
81  void *resolve(const char *symbol)
82  {
83  if (!m_didLoad)
84  load();
85  if (!m_handle)
86  return 0;
87 #ifdef Q_OS_WINCE
88  return (void*)GetProcAddress(m_handle, (const wchar_t*)QString::fromLatin1(symbol).utf16());
89 #else
90  return (void*)GetProcAddress(m_handle, symbol);
91 #endif
92  }
93 
94  static void *resolve(const QString &libraryName, const char *symbol)
95  {
96  return QSystemLibrary(libraryName).resolve(symbol);
97  }
98 
99  static Q_CORE_EXPORT HINSTANCE load(const wchar_t *lpFileName, bool onlySystemDirectory = true);
100 
101 private:
102  HINSTANCE m_handle;
104  bool m_didLoad;
105 };
106 
108 
109 #endif // Q_OS_WIN
110 
111 #endif // QSYSTEMLIBRARY_P_H
static QString fromWCharArray(const wchar_t *, int size=-1)
Returns a copy of the string, where the encoding of string depends on the size of wchar...
Definition: qstring.cpp:1019
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
The QString class provides a Unicode character string.
Definition: qstring.h:83
bool load(bool onlySystemDirectory=true)
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
QSystemLibrary(const QString &libraryName)
void * resolve(const char *symbol)
#define Q_CORE_EXPORT
Definition: qglobal.h:1449
static QString fromLatin1(const char *, int size=-1)
Returns a QString initialized with the first size characters of the Latin-1 string str...
Definition: qstring.cpp:4188
QSystemLibrary(const wchar_t *libraryName)
static void * resolve(const QString &libraryName, const char *symbol)
const ushort * utf16() const
Returns the QString as a &#39;\0\&#39;-terminated array of unsigned shorts.
Definition: qstring.cpp:5290