Dll windows ce 6

This article is based on a prerelease version of Windows Embedded CE 6. All information herein is subject to change. Overview of Windows Embedded CE 6. The first version of Windows CE shipped in Since then, many new types of portable and embedded products have emerged-enabled by myriad advances in semiconductor components. For each of its previous five versions, Windows CE has served as the foundation for a wide range of embedded devices.

The newest version, Windows Embedded CE 6. See the sidebar "Inside Embedded Innovation at Microsoft". The process of conceiving, planning, developing, and delivering a new version of a successful product is a huge undertaking—especially when that product is an operating system, albeit a small one.

In the case of Windows CE, it involves a development team with upwards of individuals. When planning new features, Microsoft solicits customer feedback in several ways.

The best known feedback mechanism is the beta software program, whereby prerelease software is shipped to customers. But beta programs are not the only way to get input. The design and planning phases are bolstered with customer visits and design reviews to inject customer insights into the product development process. At the start of the product planning process, the Windows CE planning team hits the road to visit customers around the world to learn about their current and anticipated product development needs.

These visits occur shortly after the previous product version ships, because innovation is an ongoing process. On the basis of these visits, a draft development plan is created and reviewed internally. With a draft development plan in place, the next step involves validating the plan at a design review where hundreds of people from outside Microsoft gather to provide input. I participated in a design review in June of for the CE 6.

This week-long event started with participants signing non-disclosure agreements NDA to facilitate open and honest discussion on both sides. The actual mechanics of a design review are pretty interesting. Major feature areas are first described by members of a development team. Each presentation ends with a question and answer period, and each participant uses a wireless voting box that was provided at registration. Immediately after each vote, the results are displayed for everyone to view and discuss.

By the end of the week, each participant may have provided hundreds of opinions on how the development team should set priorities. The value of the exercise can best be measured by the new insights that development teams have gotten when they put their tough questions in front of customers who are relying on the presence of some feature in a future product version.

The specific features of interest to you will depend on the type of gadgets you are working with. If you're a designer of headless industrial controllers, it's likely you have a different set of needs from a software developer creating the next generation of sewing machine applications. Both are likely to define what's interesting in ways that might not make sense to a developer of mobile phone applications.

You get the point. But can one platform support both standard and custom devices? Yes, Windows Mobile and custom embedded devices are linked by a vast technology portfolio that includes a small but capable multithreaded kernel, a rich family of programming APIs-Win32, MFC, and the.

NET Compact Framework-and a powerful, extensible set of development tools. Windows Embedded CE 6. In this article I'll describe the new CE 6. I'll then cover other new features of CE 6. Finally, I'll go over the new tools for configuring, building, and testing the myriad Windows CE configurations. The discussion of tools is aimed squarely at developers of embedded applications who create custom Windows CE configurations.

But if you're a Windows Mobile developer and are tempted to skip this second half, I urge you to keep reading, paying special attention to the discussion of Windows CE shared source. It's a mandatory resource for anyone who wants the inside scoop on Windows CE that only the source code can provide.

One of the strengths of Windows CE is that its development benefitted from the features and optimizations of the desktop versions of Windows. In Windows NT 3. Owing to performance penalties of so many context switches between the heavyweight Windows NT processes, this architecture was formally abandoned in Windows NT 4.

At the time, all the formerly user-mode API libraries were transferred into kernel mode. A similar change is taking place with the release of Windows Embedded CE 6. There are similarities, but it is important to note the differences between the Windows CE implementation and the one on Windows NT. One difference is that Windows CE used a much more lightweight process than Windows NT, and so the performance cost was not as high.

And the use of processes to deploy system APIs allowed the demands for ROM and RAM to be gated by how much of the overall operating system was needed for a specific device. For example, a device could be configured to run with just one API process, the system kernel nk.

Although the new model does provide some performance improvements, the real motivating factor for making the change is to remove limitations that could bottleneck development on the next generation of devices. Those limitations, which are well known to Windows CE programmers, include the limit on total number of processes 32 , and the small virtual address space 32MB of previous generations of Windows CE kernels.

Many things have changed in the decade since the first kernel was deployed. Today's designs don't need the tiny memory footprint of yesterday's models, and so a redesign was in order.

With CE 6. Figure 1 summarizes the changes between Windows CE 5. While this reorganization of the operating system was underway, another important change was made: OEM code was separated from operating system code. Previously, a hardware designer created a low-level set of routines called the OEM Adaptation Layer OAL , and that component was statically linked to the operating system kernel.

The OAL and the kernel appeared as a single executable, nk. In CE 6. The higher privilege level is referred to as kernel mode; the lower privilege level is known as user mode.

Any memory that is allocated for either code or data is assigned to one of these two modes. Putting code in user mode helps the overall environment run more robustly and more securely. However, these benefits are not free, because mixing user-mode and kernel-mode code is generally slower than running the system entirely in kernel mode. In previous versions, Windows CE could be configured for all kernel-mode operation, or for mixed-mode operation using both kernel mode and user mode.

As shown in Figure 2 , some components have both a user-mode and a kernel-mode incarnation. This deployment helps minimize the cost of calling across the privilege boundary, at the expense of a larger operating system image. The new kernel brings a completely new memory architecture that eliminates the previous limits on available processes and address space size.

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Unable to connect to remote server Windows Mobile CE. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions.

The following code is an example of a definition file. In load-time dynamic linking, you must link the SampleDLL. In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL. With the introduction of. NET and the. An assembly is a logical unit of functionality that runs under the control of the. An assembly physically exists as a. An assembly file contains an assembly manifest, type metadata, Microsoft intermediate language MSIL code, and other resources.

The assembly manifest contains the assembly metadata that provides all the information that is required for an assembly to be self-describing. The following information is included in the assembly manifest:. The MSIL code that is contained in the assembly cannot be directly executed. By default, when you create an assembly, the assembly is private to the application. To create a shared assembly requires that you assign a strong name to the assembly and then publish the assembly in the global assembly cache.

The following list describes some of the features of assemblies compared to the features of Win32 DLLs:. When you create an assembly, all the information that is required for the CLR to run the assembly is contained in the assembly manifest. The assembly manifest contains a list of the dependent assemblies. Therefore, the CLR can maintain a consistent set of assemblies that are used in the application.

In an assembly manifest, version information is recorded and enforced by the CLR. Additionally, version policies let you enforce version-specific usage.

In Win32 DLLs, versioning can't be enforced by the operating system. You must make sure that DLLs are backward compatible. Assemblies support side-by-side deployment. One application can use one version of an assembly, and another application can use a different version of an assembly.

Starting in Windows , side-by-side deployment is supported by locating DLLs in the application folder. Additionally, Windows File Protection prevents system DLLs from being overwritten or replaced by an unauthorized agent. An application that is developed by using an assembly can be self-contained and isolated from other applications that are running on the computer. This feature helps you create zero-impact installations.

An assembly is run under the security permissions that are supplied in the assembly manifest and that are controlled by the CLR. An assembly can be developed by using any one of the supported. NET languages. For example, you can develop an assembly in Microsoft Visual C , and then use the assembly in a Visual Basic. NET project. Deploying and Configuring Applications. Run-Time Dynamic Linking. Thread Local Storage. Skip to main content.

This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Note In multithreaded applications, make sure that access to the DLL global data is synchronized thread safe to avoid possible data corruption.