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从DevExpress中的TCxGroupBox生成一个新控件问题
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
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老小笨鸟 2013-07-16
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？
老小笨鸟 2013-07-16
已经包含了吧？就是上面的代码
老小笨鸟 2013-07-15
在cxControls里
ccrun.com 2013-07-15
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 2013-07-15
老妖，请帮忙看看，我这个还什么没干呢，可就是不能编译
老小笨鸟 2013-07-15
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 2013-07-15
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
ccrun.com 2013-07-12
如果还不行，试着从工程选项中将 NO_STRICT 字样删除。
ccrun.com 2013-07-12
试试在：
#include <vcl.h>
#pragma hdrstop#define HDC unsigned int缘中人 2013-07-12
这个函数哪来的，有没有定义或者实现的代码
