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LRESULT MyDialog::OnhScroll(WPARAM wParam, LPARAM lParam)
{
int nSbCode = LOWORD(wParam); //获得控件通知消息码
HWND hCtrl = (HWND)lParam; //控件句柄
/*WORD lPos = HIWORD(wParam);*/只有拖动滑块时才有滑块当前位置信息
int pos = SendMessage(hCtrl, SBM_GETPOS, 0, 0); //获得当前滑块位置
switch (nSbCode)
{
case SB_LINELEFT: //点击左边按钮消息
pos-=5;
break;
case SB_LINERIGHT: //点击右边按钮消息
pos+=5;
break;
case SB_PAGELEFT: //点击滑块左边滚动条空白翻页消息
pos -= 20;
break;
case SB_PAGERIGHT: //点击滑块右边空白处为翻页消息
pos += 20;
break;
/*case SB_THUMBTRACK: //拖动滑块时消息
SendMessage(hCtrl, SBM_SETPOS, lPos, 1);
return true;*/
case SB_THUMBPOSITION: //拖动滑块放开消息
pos = HIWORD(wParam);
break;
}
SendMessage(hCtrl, SBM_SETPOS, pos, 1); //设置当前位置=pos,并重绘控件
CString str;
str.Format(TEXT("%d"), pos);
SetDlgItemText(IDC_STATIC1, str);
return LRESULT();
}
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