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            Codejie's C++ Space

            Using C++

            LingosHook:Plugins under wxWidget


                這幾天一直在被Plugins折騰,用老辦法用wxWidget實現(xiàn)插件方式一直都失敗,主要是在DLL中創(chuàng)建的窗口無法獲得Application Instance,導致窗口彈出時,直接CORE,很是苦惱。。。后來嘗試將主窗口的Instance和Window作為參數(shù)傳給DLL中的窗口,彈出沒有問題,但當窗口關閉是,也會引起主窗口關閉,懷疑是公用消息隊列所致,又是苦惱了幾天~
                好在現(xiàn)在世界無限大,找來找去,還真發(fā)現(xiàn)早有前輩實現(xiàn)了這些,啥也不管了,COPY & PASTE 先,爸爸說的好--“天下文人是一家”,我覺得程序員亦是如此。。。
                原帖在這,敬請移步--http://wxforum.shadonet.com/viewtopic.php?t=13178&highlight=plugin

                雖還沒有太弄懂其原理,但大體看原帖應該也碰到了和我一樣的問題。所以其在DLL創(chuàng)建窗口前,先初始了一個App來接管或者封裝住后面的窗口。實在是高人,至少我沒有想到這樣,用到的那些函數(shù)也從沒見過,實在是高啊。。。這里我還有些糊涂,此時DLL中的窗口運行在哪個進程中?我還不想在LingosHook中引入鎖。。。

                下面是主要的,也是重要的代碼。
            #ifndef __EXPORTS_H__
            #define __EXPORTS_H__

            //http://wxforum.shadonet.com/viewtopic.php?t=13178&highlight=plugin

            #include 
            "wx/wx.h"
            #include 
            "wx/msw/private.h"

            #define IMPLEMENT_PLUGIN(name)                                                              \
                
            extern "C" __declspec(dllexport) ActivityObject* GetActivity() return new name; }     \
                                                                                                        \
                
            class name##DLLApp : public wxApp                                                       \
                
            {                                                                                       \
                }
            ;                                                                                      \
                IMPLEMENT_APP_NO_MAIN(name##DLLApp)                                                     \
                                                                                                        \
                BOOL APIENTRY DllMain(HANDLE hModule, DWORD uCallReason, LPVOID pReserved)              \
                
            {                                                                                       \
                    
            switch(uCallReason)                                                                 \
                    
            {                                                                                   \
                    
            case DLL_PROCESS_ATTACH:                                                            \
                        
            {                                                                               \
                            wxSetInstance((HINSTANCE)hModule);                                          \
                            
            int argc = 0char* argv = NULL;                                            \
                            wxEntryStart(argc, 
            &argv);                                                  \
                            
            return TRUE;                                                                \
                        }
                                                                                           \
                        
            break;                                                                          \
                    
            case DLL_THREAD_ATTACH:                                                             \
                        
            break;                                                                          \
                    
            case DLL_THREAD_DETACH:                                                             \
                        
            break;                                                                          \
                    
            case DLL_PROCESS_DETACH:                                                            \
                        wxEntryCleanup();                                                                \
                        
            break;                                                                          \
                    
            default:                                                                            \
                        
            return FALSE;                                                                   \
                    }
            ;                                                                                  \
                                                                                                        \
                    
            return TRUE;                                                                        \
                }
                                                                                                   \
                

            #endif

                上面代碼被我去掉了幾行,沒別的意思,只是感覺么什么用處,當然也可能自己道行還不夠,沒體會到其中奧秘。不過去掉了還是能正常使用,如下圖。有興趣的,請去看原帖。




            <---- 蛋疼的分割線---->

                知道啥叫‘蛋疼’不。。。為了搞定這個Plugins,特意寫了Test工程。。。搞死我了。。。

            posted on 2011-01-07 18:39 codejie 閱讀(1691) 評論(0)  編輯 收藏 引用 所屬分類: C++LingosHook

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