When DCOM/COM + is called on the local machine, the problem is often relatively simple. If remote calls are required, many problems may occur, such as 80070005 (acess is denied) and 80040155 (interface not registered). Because cross-Machine Access is involved, permissions are involved, registry configuration and so on.At the same time, when different types of clients (C ++ type and other compilation customers, or VBScript and other interpretation cust
Create a win32 app Project
1. h file
# Pragma once
# Include "atlcomcli. h"
# Import ". xdll. dll" no_namespace named_guids raw_interfaces_only // load dll
2. cpp File
According to the com interface provided by dll, note that it is not an export interface
CoInitialize (NULL );
CComPtr ClientAPI. CoCreateInstance (CLSID_Client );
HRESULT Ret = ClientAPI-> IsClientRun (); // call the
Call JavaScript Functions in COM components
The requirement is very simple, that is, COM component A runs in IE. using JavaScript (JS) to call method longcalc () of A is a time-consuming operation, the current IE progress must be notified. This requires the use of the callback function, set its name to scriptcallback
Arcgisengine two times in the development, the geoprocessing, namely: Intersect operation, intersection take counter operation, erase operation and so on, if the permission is improperly assigned, it will appear on the face of COM component call returned error HRESULT e_fail errorThe reasons for this are as follows: In the case of Erasure, intersection inversion, and other advanced operations, must be arcg
Call JavaScript Functions in COM components The requirement is very simple, that is, COM component A runs in IE. using JavaScript (JS) to call method longcalc () of A is a time-consuming operation, the current IE progress must be notified. This requires the use of the callback function, set its name to scriptcallbackfu
Easy language calls CSharp write COM components, in addition to registering CSharp write DLL (because it is. NET code, you need to use the. NET to bring the registration tool RegAsm.exe registration, the specific registration method is:C:\WINDOWS\Microsoft.NET\Framework\v2. 0.50727\regasm.exe dotnet_lib.dll/tlbThis method of invocation, after most of the machine can be successful, but there are unsuccessful cases, the specific performance is as follow
Use C ++ to write COM components and use C # To call
1,It is especially important to open vs as an administrator. Otherwise, it will fail.
2. Create a c ++ ATL project, all of which are set by default.
3. Add an ATL simple object and add it from the add class,
4. Add a method. Note that the method is added to the Class View, and the rest are default.
5. Add the code to the test. cpp file to generate
In the process of calling the COM component in a WinForm program to operate an existing Excel file, if the process is long, for example, it takes 20 minutes, if you click the Excel file manually, the file can still be opened, but an error will be reported in the WinForm program. The current business requirement is that when you call the COM component to operate a
Using macros to call DirectX com
Many Microsoft DirectX interfaces define a macro for each method, which makes it easier to use these methods in your application. You will find these macros in the header file of the interface declaration. These macros are designed to be Macros in C and Macros in C ++. If you want to use Macros in C ++, you must define _ cplusplus. Otherwise, you will use Macros in C. The sy
1. Open Developer command Prompt for VS (vs2017 Developer command prompt) as Administrator2. Locate the installation directory for your vs2017Example: C:\Program Files (x86) \microsoft Visual Studio\2017\enterprise\common7\ide\publicassembliesFirst enter CD c: switch to C drive and then CD C:\Program Files (x86) \microsoft Visual Studio\2017\enterprise\common7\ide\publicassemblies3. Execute the following codeGacutil-i Microsoft.visualstudio.shell.interop.11.0.dllvs2017 Add Reference Error: A
Something very practical! How many problems can this method solve in the past? First, create a C # DLL project and write a class
//
Test. CS
Namespace
Test
...
{ Public Class Mytest ... {PublicStringFun ()...{ReturnThis. Tostring ();}} }
Compile and execute vsvars32.bat of Vs in cmd to set environment variables, and then executeRegasm cscomtest.DLL/TLB: Cscomtest.TLB/Codebase
Microsoft (R). Net FrameworkProgramSet registration utility 1.1.4322.573Copyright (c) Microsof
To access the system setting Preference in AutoCAD, you must call the com api to add a reference to Autodesk. AutoCAD. Interop:
Directly run the Code:
Using Autodesk. AutoCAD. Runtime;
Using Autodesk. AutoCAD. ApplicationServices;
Using Autodesk. AutoCAD. DatabaseServices;
Using Autodesk. AutoCAD. EditorInput;
Using Autodesk. AutoCAD. Interop;
Using System. Drawing;
[CommandMethod ("GetBkClr")]
Public vo
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