如何与另一个应用程序共享HGLOBAL？ [英] How to share HGLOBAL with another application?

问题描述

我想了解 HGLOBAL 的一些东西，因为我刚刚发现我的想法是错误的。

在应用程序AI GlobalAlloc（）数据（ GMEM_SHARE | GMEM_MOVABLE ）中， c $ c>Test。现在，我可以给另一个应用程序来获取这些数据？

我虽然（错误！） HGLOBAL HGLOBAL 是一个 HANDLE 到全局数据，所有的进程都是有效的，而不是指向全局数据的指针（这就是我说的OHHHH！）。

那么如何传递 HGLOBAL 到另一个应用程序？

注意：我想传递一个指针到数据，而不是数据本身， p>

非常感谢！ ： - ）

解决方案

阅读文档。随着32位处理的引入， GlobalAlloc（）实际上不再分配全局内存。

要共享一个内存块与另一个进程，您可以分配与 GlobalAlloc（）块，并把它放在剪贴板，然后让其他进程检索它。或者你可以使用 CreateFileMapping（）和 MapViewOfFile（）分配一块共享内存。

I'm trying to understand something about HGLOBALs, because I just found out that what I thought is simply wrong.

In app A I GlobalAlloc() data (with GMEM_SHARE|GMEM_MOVABLE) and place the string "Test" in it. Now, what can I give to another application to get to that data?

I though (wrongfully!) that HGLOBALs are valid in all the processes, which is obviously wrong, because HGLOBAL is a HANDLE to the global data, and not a pointer to the global data (that's where I said "OHHHH!").

So how can I pass the HGLOBAL to another application?

Notice: I want to pass just a "pointer" to the data, not the data itself, like in the clipboard.

Thanks a lot! :-)

解决方案

Read the documentation. With the introduction of 32-bit processing, GlobalAlloc() does not actually allocate global memory anymore.

To share a memory block with another process, you could allocate the block with GlobalAlloc() and put it on the clipboard, then have the other process retreive it. Or you can allocate a block of shared memory using CreateFileMapping() and MapViewOfFile() instead.

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