本文整理汇总了C++中Extension::GetCapabilities方法的典型用法代码示例。如果您正苦于以下问题：C++ Extension::GetCapabilities方法的具体用法？C++ Extension::GetCapabilities怎么用？C++ Extension::GetCapabilities使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Extension的用法示例。
在下文中一共展示了Extension::GetCapabilities方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: strlen
///////////////////////////////////////////////////////////////////////////////
// loads a gls extension. #TODO: Robust name to path resolution.
GLS_EXTENSION_MODULE *gls::gls_extension_load (
const char *name,
unsigned long req_options,
ExtensionHost *pHost
)
{
// validate name
size_t lenName = strlen(name);
if (lenName == 0 || lenName > GLS_EXTENSION_MAX_PATH_LEN) {
return NULL;
}
// make lib path; keep enough space for path expanding {
// char libPath [GLS_EXTENSION_MAX_LIB_NAME_LEN + 50];
char libPath [MAX_PATH];
#ifdef GLS_EXTENSION_LOAD_TREAT_NAME_AS_PATH
strcpy (libPath, name);
#else
sprintf (libPath, "extensions\\%s%s.%s",
EXT_MOD_NAME_PREFIX, name, EXT_MOD_EXT_NAME
);
#endif
// } make lib path
// load the extension module
#ifdef WIN32
HMODULE hExtMod = EXT_LOAD(libPath);
#else
void *hExtMod = NULL;
#endif
if (hExtMod == NULL) {
return NULL; // failed to load the module
}
// get extension module entry points
pfn_gls_extension_initialize pfn_ext_init;
pfn_gls_extension_terminate pfn_ext_term;
pfn_gls_extension_get_interface pfn_ext_get_int;
EXT_ENTRY_POINT (hExtMod, pfn_ext_init, gls_extension_initialize);
EXT_ENTRY_POINT (hExtMod, pfn_ext_term, gls_extension_terminate);
EXT_ENTRY_POINT (hExtMod, pfn_ext_get_int, gls_extension_get_interface);
// check for missing exports
if (!pfn_ext_init || !pfn_ext_term || !pfn_ext_get_int) {
EXT_UNLOAD(hExtMod);
return NULL;
}
// try to initialize the extension
if (!pfn_ext_init (pHost)) {
EXT_UNLOAD(hExtMod);
return NULL; // failed to initialize the extension
}
// get the extension interface and query extension capabilities
Extension *pExtension = pfn_ext_get_int ();
if (pExtension == NULL) {
EXT_UNLOAD(hExtMod);
return NULL;
}
// get extension's interface version
unsigned short ext_int_ver = pExtension->GetInterfaceVersion ();
unsigned char ext_int_ver_maj, ext_int_ver_min;
ext_int_ver_maj = GLS_VERSION_GET_MAJOR(ext_int_ver);
ext_int_ver_min = GLS_VERSION_GET_MINOR(ext_int_ver);
// check for minimum interface version; extension's interface version
// must be atleast equal to the required interface version
unsigned char req_int_ver_maj, req_int_ver_min;
req_int_ver_maj = 0;
req_int_ver_min = 1;
if ( (ext_int_ver_maj < req_int_ver_maj) ||
(ext_int_ver_maj == req_int_ver_maj && ext_int_ver_min < req_int_ver_min)
) {
EXT_UNLOAD(hExtMod); // extension interface version is lower than required
return NULL;
}
// query extension capabilities
unsigned long capabilities = pExtension->GetCapabilities ();
if ( (capabilities & req_options) != req_options ) {
EXT_UNLOAD(hExtMod); // one or more capability not supported
return NULL;
}
// query lib features
GLS_EXTENSION_LIB_INFO libInfo;
void *pLibInterface;
if (req_options & GLS_EXTENSION_LIBRARY) {
pExtension->GetLibInfo (&libInfo);
pLibInterface = pExtension->GetLibInterface ();
if (pLibInterface == NULL) {
EXT_UNLOAD(hExtMod); // library interface not returned
return NULL;
}
//.........这里部分代码省略.........