minigui代码分析文档格式.docx

minigui代码分析文档格式.docx

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PMAINWINCREATEpCreateInfo

结构体MAINWINCREATE定义了被创建的窗口的位置、标题、类型等基本参数。

实际上包含了创建窗口的UI风格和窗口处理函数两方面的内容。

PMAINWINCREATE为指向该结构体的指针。

typedefstruct_MAINWINCREATE

{

DWORDdwStyle;

//主窗口的类型

DWORDdwExStyle;

//主窗口的扩展类型

constchar*spCaption;

//主窗口的标题

HMENUhMenu;

//主窗口菜单句柄

HCURSORhCursor;

//主窗口光标句柄

HICONhIcon;

//主窗口图标句柄

HWNDhHosting;

//主窗口的托管窗口Thehostingmainwindow

int（*MainWindowProc）（HWND,int,WPARAM,LPARAM）;

//窗口回调函数

intlx,ty,rx,by;

//主窗口在屏幕坐标中的位置

intiBkColor;

//主窗口颜色的像素值

DWORDdwAddData;

//私有数据Thefirstprivatedataassociatedwiththemainwindow

DWORDdwReserved;

//没有用到

}MAINWINCREATE;

typedefMAINWINCREATE*PMAINWINCREATE;

2、MAINWIN结构体：

主窗口的详细信息由该结构体给出

typedefstruct_MAINWIN

/*

*ThesefieldsaresimiliarwithCONTROLstruct.

*/

shortDataType;

//thedatatype.

shortWinType;

//thewindowtype.

intleft,top;

//thepositionandsizeofmainwindow.

intright,bottom;

intcl,ct;

//thepositionandsizeofclientarea.

intcr,cb;

//thestylesofmainwindow.

//theextendedstylesofmainwindow.

//thebackgroundcolor.

//handleofmenu.

HACCELhAccel;

//handleofacceleratortable.

//handleofcursor.

//handleoficon.

HMENUhSysMenu;

//handleofsystemmenu.

PLOGFONTpLogFont;

//pointertologicalfont.

HDCprivCDC;

//theprivateclientDC.

INVRGNInvRgn;

//theinvalidregionofthismainwindow.

PGCRINFOpGCRInfo;

//pointertoglobalclipregioninfostruct.

PZORDERNODEpZOrderNode;

PCARETINFOpCaretInfo;

//pointertosystemcaretinfostruct.

//theadditionaldata.

DWORDdwAddData2;

//thesecondaddtionaldata.

int（*MainWindowProc）（HWND,int,WPARAM,LPARAM）;

//theaddressofmainwindowprocedure.

char*spCaption;

//thecaptionofmainwindow.

intid;

//theidentifierofmainwindow.

SCROLLBARINFOvscroll;

//theverticalscrollbarinformation.

SCROLLBARINFOhscroll;

//thehorizitalscrollbarinformation.

struct_MAINWIN*pMainWin;

//themainwindowthatcontainsthiswindow.

//formainwindow,alwaysbeitself.

HWNDhParent;

//theparentofthiswindow.

//formainwindow,alwaysbeHWND_DESKTOP.

*Childwindows.

HWNDhFirstChild;

//thehandleoffirstchildwindow.

HWNDhActiveChild;

//thecurrentlyactivechildwindow.

HWNDhOldUnderPointer;

//theoldchildwindowunderpointer.

HWNDhPrimitive;

//thepremitivechildofmouseevent.

NOTIFPROCNotifProc;

//thenotificationcallbackprocedure.

*windowelementdata.

struct_wnd_element_data*wed;

*MainWindowhosting.

*Thefollowingmembersareonlyimplementedformainwindow.

struct_MAINWIN*pHosting;

//thehostingmainwindow.

struct_MAINWIN*pFirstHosted;

//thefirsthostedmainwindow.

struct_MAINWIN*pNextHosted;

//thenexthostedmainwindow.

PMSGQUEUEpMessages;

//themessagequeue.

GCRINFOGCRInfo;

//theglobalclipregioninfostruct.

//putheretoavoidinvokingmallocfunction.

}MAINWIN;

3、MSGQUEUE消息队列

struct_MSGQUEUE

DWORDdwState;

//messagequeuestates

PQMSGpFirstNotifyMsg;

//headofthenotifymessagequeue

PQMSGpLastNotifyMsg;

//tailofthenotifymessagequeue

IDLEHANDLEROnIdle;

//Idlehandler

MSG*msg;

/*postmessagebuffer*/

intlen;

/*bufferlen*/

intreadpos,writepos;

/*positionsforreadingandwriting*/

intFirstTimerSlot;

/*thefirsttimerslottobechecked*/

DWORDTimerMask;

/*timerslotsmask*/

intloop_depth;

/*messageloopdepth,fordialogboxes.*/

};

2、CreateMainWindow函数流程

1、判断传入的参数pCreateInfo是否为空

CaseNULL：

若参数为空，返回HWND_INVALID

CaseNOTNULL：

若参数不为空，继续执行2

2、为PMAINWIN类型的pWin分配内存空间，并判断pWin是否为空

分配空间失败，返回HWND_INVALID

分配空间成功，继续执行3

3、是否定义_LITE_VERSION：

3.a没有定义_LITE_VERSION，代表minigui的运行模式为MiniGui-Threads

设置pWin的成员pWin->

pMessages和pWin->

pHosting

3.b定义了_LITE_VERSION，代表minigui的运行模式为非MiniGui-Threads

4、设置pWin的成员：

pWin->

pMainWin=pWin;

hParent=0;

pFirstHosted=NULL;

pNextHosted=NULL;

DataType=TYPE_HWND;

WinType=TYPE_MAINWIN;

#ifndef_LITE_VERSION

th=pthread_self（）;

#endif

hFirstChild=0;

hActiveChild=0;

hOldUnderPointer=0;

hPrimitive=0;

NotifProc=NULL;

dwStyle=pCreateInfo->

dwStyle;

dwExStyle=pC