GetDlgItem

[fangchao918628]

	PAINTSTRUCT ps;
	HWND hwnd;
	GetDlgItem(hwnd, IDC_View);//
    HDC hdc = BeginPaint(hwnd,&ps);//
    DrawIcon(hdc,5,5,g_icon);
    EndPaint(hwnd,&ps);//

错误如下：
E:\vc程序\FilePro\new.cpp(86) : error C2664: 'void __thiscall CWnd::GetDlgItem(int,struct HWND__ ** ) const' : cannot convert parameter 1 from 'struct HWND__ *' to 'int'
This conversion requires a reinterpret_cast, a C-style cast or function-style cast
E:\vc程序\FilePro\new.cpp(87) : error C2660: 'BeginPaint' : function does not take 2 parameters
E:\vc程序\FilePro\new.cpp(89) : error C2660: 'EndPaint' : function does not take 2 parameters
弄了很久不知道什么原因？？

[lenovo218]

GetDlgItem，那两个参数弄反了吧？应该是GetDlgItem(IDC_View,hwnd);

[Conry]

在MFC里面用SDK API要加上全局符号
PAINTSTRUCT ps;
HWND hwnd;
::GetDlgItem(hwnd, IDC_View);//
HDC hdc = ::BeginPaint(hwnd,&ps);//
::DrawIcon(hdc,5,5,g_icon);
::EndPaint(hwnd,&ps);//

[lenovo218]

EndPaint改成::EndPaint试试

[fangchao918628]

？？msdn上这样

HWND GetDlgItem( 
  HWND hDlg, 
  int nIDDlgItem
);  

 Parameters 
hDlg 
[in] Handle to the dialog box that contains the control. 

nIDDlgItem 
[in] Specifies the identifier of the control to be retrieved. 

[fangchao918628]

ok了！！

[wodemuqin]

CEdit *p = (CEdit*)GetDlgItem(ID_EDIT);