关于B00LPostMessage

[kittymimihh]

B00L PostMessage(HWND hWnd,UINT Msg,WPARAM wParam,LPARAM lParam);
想知道后面两个参数的用法，能用之传递什么参数？比如说数组？能传递吗？

[lingyin55]

http://topic.csdn.net/t/20031205/15/2531769.html

[Sou2012]

up!!!

[pathuang68]

什么都可以传递！下面是我在http://topic.csdn.net/u/20090510/22/bdd28333-7dce-4139-94be-4d17bedb31c7.html帖子中的回帖内容：

Upon your request of "欢迎提供英文文章" :).

Please check up this hyperlink:
http://bbs.zdnet.com.cn/thread-578222-1-1.html

basically, WPARAM and LPARAM is int and long respectively, and on Win32 platform, sizeof(int) = sizeof(long) = 4bytes, that means WPARAM or LPARAM can be cast to a pointer(on Win32 platform, a pointer is an 32-bit number), so you can use WPARAM or LPARAM to transfer almost any kind of information, for example(in MFC):

CPoint a(89, 90);
SomeViewPointer->PostMessage(MESSAGE_ID, (WPARAM)&a, (LPARAM)"Hello, world");

and then

LRESULT SomeView::MESSAGE_ID_HANDLER(WPARAM wParam, LPARAM lParam)
{
   ...
   TRACE("Coordination:(%d, %d), and the message is: %s\n", ((CPoint*)wParam)->x, ((CPoint*)wParam)->y, lParam);
   ...
}

will print:
Coordination:(89, 89), and the message is: Hello, world

Hope this would be a little bit of help. :)