我在dialog上放了个PICTURE用来画图,为什么画图超出static大小,图就画到dialog上去了

Question

我在dialog上放了个PICTURE用来画图,为什么画图超出static大小,图就画到dialog上去了,大家帮 忙解决一下！

Answer 1

STDMETHODIMP_(BOOL) CALLBACK AboutDialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{ //POINTS point;
HWND hEdit;
HDC pDC;
POINT pt; 
COLORREF m_nCurrentColor;//图元颜色
int  m_iPenWidth;        //画笔宽度
m_nCurrentColor=RGB(230, 133, 26);
m_iPenWidth=3; hEdit=GetDlgItem(hwndDlg,IDC_STATIC1);
pDC= GetDC(hEdit);//获得DC    switch (uMsg) {
    case WM_INITDIALOG:
m_hcurCross = (HCURSOR)::LoadImage(v_hModule,MAKEINTRESOURCE(IDC_CURSOR1), IMAGE_CURSOR, 32, 32, LR_DEFAULTCOLOR);
   ::SetClassLong(hwndDlg, GCL_HCURSOR, (LONG)m_hcurCross);//修改缺省光标
   //加载图片
   //SendDlgItemMessage(hwndDlg, IDC_COMBO3, CB_ADDSTRING, 0, (LPARAM)"USER_ID");
   //SendDlgItemMessage(hwndDlg, IDC_COMBO3, CB_ADDSTRING, 0, (LPARAM)"USER_ID");
   break;
case WM_LBUTTONDOWN:
m_bDrawing=true;
RECT client; GetClientRect(hEdit, &client);
ClientToScreen(hEdit,(POINT*)&client);//转化为屏幕坐标 pt.x = MAKEPOINTS( lParam ).x;
pt.y = MAKEPOINTS( lParam ).y-26;
client.top= client.top-26;
client.bottom= client.bottom+26; ::ClipCursor(&client);//锁定鼠标移动范围
m_usrCurrentObject = new CDrawCurve(m_nCurrentColor, m_iPenWidth);
m_usrCurrentObject->NewPoint(pt.x, pt.y);
ReleaseDC(hEdit, pDC); 
  break;
  case WM_MOUSEMOVE: 
if(m_bDrawing)
{
pt.x = MAKEPOINTS( lParam ).x;
pt.y = MAKEPOINTS( lParam ).y-26;
m_usrCurrentObject->MoveAt(pDC, pt.x, pt.y);
ReleaseDC(hEdit, pDC); 
}
            break; 
      case WM_LBUTTONUP: 
::ClipCursor(NULL);//锁定鼠标移动范围
m_usrCurrentObject->Draw(pDC);
m_bDrawing = false;
delete m_usrCurrentObject;
m_usrCurrentObject = NULL;
break;
    case WM_COMMAND:
        switch (LOWORD(wParam)) 
{
case IDOK2:
case IDC_BUTTON2:
COLORREF        rgColors[16]; 
CHOOSECOLOR     cc; 
UINT            i, uTemp; 
for (i=0; i<16; i++)  
rgColors[i]=RGB(0, 0, i*16); 
memset(&cc, 0, sizeof(CHOOSECOLOR));    
cc.lStructSize=sizeof(CHOOSECOLOR);  
cc.lpCustColors=rgColors;        
cc.hwndOwner=hwndDlg;          
cc.Flags=CC_RGBINIT;       
//cc.rgbResult=pDoc->ColorGet(uTemp); 
ChooseColor(&cc);
            //if (ChooseColor(&cc))
            //     pDoc->ColorSet(uTemp, cc.rgbResult);
return TRUE;
        case IDOK:
DestroyWindow(hwndDlg); 
                    //hwndGoto = NULL; 
                    return TRUE;             //EndDialog(hwndDlg, TRUE);
            //return TRUE;
        }
    }    return FALSE;
}以上是我的代码，我该如何修改，谢谢！

Answer 2

还有，我现在在画图时左边与顶边不会画出，只有右边与底边会画出static1，并且光标向下偏移了24

Answer 3

CRgn rgn;
   rgn.CreateRectRgn(rectClip.left,rectClip.top,
        rectClip.right,rectClip.bottom);
    pDC->SelectClipRgn(&rgn);]
这个可以保证你不画到外面