从DevExpress中的TCxGroupBox生成一个新控件问题

[老小笨鸟]

如题，生成一个package后，什么也不加，编译报错，说PaintWindow找不到，[Linker Error] Unresolved external '__fastcall Cxcontrols::TcxControl::PaintWindow(void *)' referenced from path\CXGROUPBOXEX.OBJ,这个是怎么回事，请大拿解惑

[缘中人]

这个函数哪来的，有没有定义或者实现的代码

[ccrun.com]

试试在：

#include <vcl.h>
#pragma hdrstop

代码以后加入一行：

#define HDC unsigned int

[ccrun.com]

如果还不行，试着从工程选项中将 NO_STRICT 字样删除。

[老小笨鸟]

头文件: //--------------------------------------------------------------------------- #ifndef cxGroupBoxExH #define cxGroupBoxExH //--------------------------------------------------------------------------- #include <SysUtils.hpp> #include <Classes.hpp> #include "cxContainer.hpp" #include "cxControls.hpp" #include "cxEdit.hpp" #include "cxGroupBox.hpp" #include <Controls.hpp> //#define HDC unsigned int //--------------------------------------------------------------------------- class PACKAGE TcxGroupBoxEx : public TcxGroupBox { private: protected: virtual void __fastcall CreateWnd(); virtual void __fastcall Paint(void); virtual void __fastcall PaintWindow(HDC DC); public: __fastcall TcxGroupBoxEx(TComponent* Owner); __published: }; //--------------------------------------------------------------------------- #endif

[老小笨鸟]

CPP文件: //--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "cxGroupBoxEx.h" #pragma link "cxContainer" #pragma link "cxControls" #pragma link "cxEdit" #pragma link "cxGroupBox" #pragma package(smart_init) //--------------------------------------------------------------------------- // ValidCtrCheck is used to assure that the components created do not have // any pure virtual functions. // static inline void ValidCtrCheck(TcxGroupBoxEx *) { new TcxGroupBoxEx(NULL); } //--------------------------------------------------------------------------- __fastcall TcxGroupBoxEx::TcxGroupBoxEx(TComponent* Owner) : TcxGroupBox(Owner) { } //--------------------------------------------------------------------------- void __fastcall TcxGroupBoxEx::CreateWnd() { TcxGroupBox::CreateWnd(); } //--------------------------------------------------------------------------- void __fastcall TcxGroupBoxEx::Paint(void) { TcxGroupBox::Paint(); } //--------------------------------------------------------------------------- void __fastcall TcxGroupBoxEx::PaintWindow(HDC DC) { TcxGroupBox::PaintWindow(DC); } //--------------------------------------------------------------------------- namespace Cxgroupboxex { void __fastcall PACKAGE Register() { TComponentClass classes[1] = {__classid(TcxGroupBoxEx)}; RegisterComponents("Samples", classes, 0); } } //---------------------------------------------------------------------------

[老小笨鸟]

老妖，请帮忙看看，我这个还什么没干呢，可就是不能编译

[ccrun.com]

用UltraEdit的全文搜索功能，看看PaintWindow函数是在DevExpress的哪个bpi文件中存在，然后把这个bpi文件加入到工程。

[老小笨鸟]

在cxControls里

[老小笨鸟]

已经包含了吧？就是上面的代码

[老小笨鸟]

各位高手，帮忙看看啊，我就想从cxGroupBox派生一个新控件，上面我还什么也没干呢，各位，试试吧？