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分享web上嵌入的控件如何实现IMessageFilter.PreFilterMessage?
OBJECT id="simpleControl1" style="WIDTH: 373px; HEIGHT: 367px" height="367" width="373"
classid="TwainDll.dll#TwainDll.UserControl1" VIEWASTEXT>
</OBJECT>
TwainDll是一个windows控件库, 它的控件继承了IMessageFilter接口
public class UserControl1 : System.Windows.Forms.UserControl, IMessageFilter
{
....
}
如果把控件拿到winforms中, 它可以正常运行, 但是在web 上它无法实现消息过滤??
请问如何实现?
classid="TwainDll.dll#TwainDll.UserControl1" VIEWASTEXT>
</OBJECT>
TwainDll是一个windows控件库, 它的控件继承了IMessageFilter接口
public class UserControl1 : System.Windows.Forms.UserControl, IMessageFilter
{
....
}
如果把控件拿到winforms中, 它可以正常运行, 但是在web 上它无法实现消息过滤??
请问如何实现?
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panyee 2003-11-07
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用重载DefWndProc实现了
rqxiang 2003-11-06
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gz！
saucer 2003-11-06
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most likely, it is security issues, if you look at the Security requirement for Application.AddMessageFilter:
SecurityPermission for the immediate caller to call unmanaged code.
try to give the permissions to call unmanaged code in
Adminstrative Tools->Microsoft .NET Framework Configuration, right click on Runtime Security Policy, select New or Adjust Policy..., follow the instructions...
SecurityPermission for the immediate caller to call unmanaged code.
try to give the permissions to call unmanaged code in
Adminstrative Tools->Microsoft .NET Framework Configuration, right click on Runtime Security Policy, select New or Adjust Policy..., follow the instructions...
