我想开发一个ActiveX控件,但是我没有Visual Studio,所以我想知道我是否可以仅使用Visual C++ Express版,还是我还需要Windows平台SDK?
我想开发一个ActiveX控件,但是我没有Visual Studio,所以我想知道我是否可以仅使用Visual C++ Express版,还是我还需要Windows平台SDK?
[version]
signature="$CHICAGO$"
AdvancedINF=2.0
[Add.Code]
YOURCONTROL.dll=YOURCONTROL.dll
[YOURCONTROL.dll]
file-win32-x86=thiscab
clsid={11111111-2222-3333-4444-555555555555}
FileVersion=1,2,3,4567
RegisterServer=yes
您需要在项目中添加一个标准的 .DEF 文件,列出 COM 和自注册所需的导出函数。DllGetClassObject 是 COM 调用获取 COM 对象类工厂的位置。RegisterServer 和 UnregisterServer 是您应该将初始状态写入注册表的位置(例如 COM 对象注册等)。
EXPORTS
DllCanUnloadNow PRIVATE
DllGetClassObject PRIVATE
DllRegisterServer PRIVATE
DllUnregisterServer PRIVATE
您还需要一个IDL文件,这样您就可以定义COM对象的dispinterface,以便它可以从脚本中调用,并且可以向Javascript触发事件。大致如下:
import "oaidl.idl";
import "ocidl.idl";
#include "dispids.h" // <-- define your DISPIDs here
[
uuid(<<generate your own guid here>>),
version(1.0),
]
library YOURCONTROLLIBRARY
{
[
uuid(<<generate your own guid here>>),
hidden
]
dispinterface DYOURCONTROLEvents
{
properties:
methods:
// Add outgoing events here.
[id(DISPID_SOME_EVENT)] void SomeEvent();
}
[
dual,
uuid(<<generate your own guid here>>)
]
interface IYOURCONTROL : IDispatch
{
// Add methods and properties here.
[id(DISPID_SOMEMETHOD)] HRESULT SomeMethod([in] BSTR bstrFoo);
}
[
uuid(<<generate your own guid here>>)
]
coclass YOURCONTROLCtl
{
[default] interface IYOURCONTROL;
[source, default] dispinterface DYOURCONTROLEvents;
}
}
最后,你的DLL入口点应该看起来像这样:
HINSTANCE g_hInstance;
LONG g_nDllRefs;
extern "C"
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved) {
switch (dwReason) {
case DLL_PROCESS_ATTACH:
g_hInstance = hInstance;
g_nDllRefs = 0;
break;
case DLL_PROCESS_DETACH:
break;
}
return true;
}
// Call this whenever you create your object to keep your DLL loaded.
void DllAddRef() {
InterlockedIncrement(&g_nDllRefs);
}
// Call this when your object is destroyed.
void DllRelease() {
InterlockedDecrement(&g_nDllRefs);
}
STDAPI DllCanUnloadNow() {
return (g_nDllRefs == 0 ? S_OK : S_FALSE);
}
// This is where you create your class factory. See the IClassFactory documentation on msdn.
STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv) {
HRESULT hr;
if (rclsid == CLSID_YOUROBJECTCtl) {
CYOUROBJECTFactory *pYOUROBJECTFactory = new CYOUROBJECTFactory;
if (pYOUROBJECTFactory == NULL) {
hr = E_OUTOFMEMORY;
} else {
hr = pYOUROBJECTFactory ->QueryInterface(riid, ppv);
}
} else {
hr = CLASS_E_CLASSNOTAVAILABLE;
}
return hr;
}
STDAPI DllRegisterServer() {
// Write your registry keys for registering your ActiveX COM Object here.
return S_OK;
}
STDAPI DllUnregisterServer() {
// Delete your registry keys here.
return S_OK;
}
这篇Microsoft Support post文章来自2006年,表明您可以使用VC++ Express版来开发ActiveX控件:
适用于
Microsoft ActiveX模板库3.0,当与以下软件一起使用时:
Microsoft Visual C++ 6.0企业版
Microsoft Visual C++ 6.0专业版
Microsoft Visual C++,32位学习版6.0
Microsoft Visual C++ 2005 Express版
Microsoft Visual C++ .NET 2003标准版
Microsoft Visual C++ .NET 2002标准版
我已经有一段时间没有使用ActiveX进行开发了,但我不记得必须安装Windows平台SDK。