27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
|
|
This Windows-specific sample demonstrates how to use wxWidgets-based UI from
|
|
within a foreign host application that may be written in any toolkit
|
|
(including wxWidgets).
|
|
|
|
For this to work, you have to overcome two obstacles:
|
|
|
|
|
|
(1) wx's event loop in the DLL must not conflict with the host app's loop
|
|
(2) if the host app is written in wx, its copy of wx must not conflict
|
|
with the DLL's one
|
|
|
|
|
|
Number (1) is dealt with by running DLL's event loop in a thread of its own.
|
|
DLL's wx library will consider this thread to be the "main thread".
|
|
|
|
The simplest way to solve number (2) is to share the wxWidgets library between
|
|
the DLL and the host, in the form of wxWidgets DLLs build. But this requires
|
|
both the host and the DLL to be compiled against exactly same wx version,
|
|
which is often impractical.
|
|
|
|
So we do something else here: the DLL is compiled against *static* build of
|
|
wx. This way none of its symbols or variables will leak into the host app.
|
|
Win32 runtime conflicts are eliminated by using DLL's HINSTANCE instead of
|
|
host app's one and by using unique window class names (automatically done
|
|
since wx-2.9).
|