1 改造一下OnDraw
2 把背景色修改成字体背景色 //pGridLog->SetGridBkColor(RGB(0, 0, 0));
pGridLog->SetGridBkColor(RGB(248, 255, 255));
#define GRIDCONTROL_GRIDLINEEXTENDTO_NOUSER //显示格扩展到非客户区
void CGridCtrl::OnDraw(CDC* pDC)
{
if (!m_bAllowDraw)
return;
CRect clipRect;
if (pDC->GetClipBox(&clipRect) == ERROR)
return;
EraseBkgnd(pDC); // OnEraseBkgnd does nothing, so erase bkgnd here.
// This necessary since we may be using a Memory DC.
#ifdef _DEBUG
LARGE_INTEGER iStartCount;
QueryPerformanceCounter(&iStartCount);
#endif
CRect rect;
int row, col;
CGridCellBase* pCell;
int nFixedRowHeight = GetFixedRowHeight();
int nFixedColWidth = GetFixedColumnWidth();
CCellID idTopLeft = GetTopleftNonFixedCell();
int minVisibleRow = idTopLeft.row,
minVisibleCol = idTopLeft.col;
CRect VisRect;
CCellRange VisCellRange = GetVisibleNonFixedCellRange(VisRect);
int maxVisibleRow = VisCellRange.GetMaxRow(),
maxVisibleCol = VisCellRange.GetMaxCol();
if (GetVirtualMode())
SendCacheHintToParent(VisCellRange);
#ifdef GRIDCONTROL_GRIDLINEEXTENDTO_NOUSER
CRect rcClient;
GetClientRect(&rcClient);
CBrush FixedRowColBack(GetDefaultCell(TRUE, TRUE)->GetBackClr());
#endif //GRIDCONTROL_GRIDLINEEXTENDTO_NOUSER
// draw top-left cells 0..m_nFixedRows-1, 0..m_nFixedCols-1
rect.bottom = -1;
for (row = 0; row < m_nFixedRows; row++)
{
if (GetRowHeight(row) <= 0) continue;
rect.top = rect.bottom+1;
rect.bottom = rect.top + GetRowHeight(row)-1;
rect.right = -1;
for (col = 0; col < m_nFixedCols; col++)
{
if (GetColumnWidth(col) <= 0) continue;
rect.left = rect.right+1;
rect.right = rect.left + GetColumnWidth(col)-1;
pCell = GetCell(row, col);
if (pCell)
{
pCell->SetCoords(row,col);
pCell->Draw(pDC, row, col, rect, FALSE);
}
}
#ifdef GRIDCONTROL_GRIDLINEEXTENDTO_NOUSER
if(rect.bottom < rcClient.bottom)
{
CRect rcFill(rect.right, rect.top, rcClient.right, rect.bottom);
pDC->FillRect(&rcFill, &FixedRowColBack);
}
#endif //GRIDCONTROL_GRIDLINEEXTENDTO_NOUSER
}
// draw fixed column cells: m_nFixedRows..n, 0..m_nFixedCols-1
rect.bottom = nFixedRowHeight-1;
for (row = minVisibleRow; row <= maxVisibleRow; row++)
{
if (GetRowHeight(row) <= 0) continue;
rect.top = rect.bottom+1;
rect.bottom = rect.top + GetRowHeight(row)-1;
// rect.bottom = bottom pixel of previous row
if (rect.top > clipRect.bottom)
break; // Gone past cliprect
if (rect.bottom < clipRect.top)
continue; // Reached cliprect yet?
rect.right = -1;
for (col = 0; col < m_nFixedCols; col++)
{
if (GetColumnWidth(col) <= 0) continue;
rect.left = rect.right+1;
rect.right = rect.left + GetColumnWidth(col)-1;
if (rect.left > clipRect.right)
break; // gone past cliprect
if (rect.right < clipRect.left)
continue; // Reached cliprect yet?
pCell = GetCell(row, col);
if (pCell)
{
pCell->SetCoords(row,col);
pCell->Draw(pDC, row, col, rect, FALSE);
}
}
}
// draw fixed row cells 0..m_nFixedRows, m_nFixedCols..n
rect.bottom = -1;
for (row = 0; row < m_nFixedRows; row++)
{
if (GetRowHeight(row) <= 0) continue;
rect.top = rect.bottom+1;
rect.bottom = rect.top + GetRowHeight(row)-1;
// rect.bottom = bottom pixel of previous row
if (rect.top > clipRect.bottom)
break; // Gone past cliprect
if (rect.bottom < clipRect.top)
continue; // Reached cliprect yet?
rect.right = nFixedColWidth-1;
for (col = minVisibleCol; col <= maxVisibleCol; col++)
{
if (GetColumnWidth(col) <= 0) continue;
rect.left = rect.right+1;
rect.right = rect.left + GetColumnWidth(col)-1;
if (rect.left > clipRect.right)
break; // gone past cliprect
if (rect.right < clipRect.left)
continue; // Reached cliprect yet?
pCell = GetCell(row, col);
if (pCell)
{
pCell->SetCoords(row,col);
pCell->Draw(pDC, row, col, rect, FALSE);
}
}
}
// draw rest of non-fixed cells
rect.bottom = nFixedRowHeight-1;
for (row = minVisibleRow; row <= maxVisibleRow; row++)
{
if (GetRowHeight(row) <= 0) continue;
rect.top = rect.bottom+1;
rect.bottom = rect.top + GetRowHeight(row)-1;
// rect.bottom = bottom pixel of previous row
if (rect.top > clipRect.bottom)
break; // Gone past cliprect
if (rect.bottom < clipRect.top)
continue; // Reached cliprect yet?
rect.right = nFixedColWidth-1;
for (col = minVisibleCol; col <= maxVisibleCol; col++)
{
if (GetColumnWidth(col) <= 0) continue;
rect.left = rect.right+1;
rect.right = rect.left + GetColumnWidth(col)-1;
if (rect.left > clipRect.right)
break; // gone past cliprect
if (rect.right < clipRect.left)
continue; // Reached cliprect yet?
pCell = GetCell(row, col);
// TRACE(_T("Cell %d,%d type: %s\n"), row, col, pCell->GetRuntimeClass()->m_lpszClassName);
if (pCell)
{
pCell->SetCoords(row,col);
pCell->Draw(pDC, row, col, rect, FALSE);
}
}
}
CPen pen;
pen.CreatePen(PS_SOLID, 0, m_crGridLineColour);
pDC->SelectObject(&pen);
#ifdef GRIDCONTROL_GRIDLINEEXTENDTO_NOUSER
VisRect.right = rcClient.right;
VisRect.bottom = rcClient.bottom;
#endif //GRIDCONTROL_GRIDLINEEXTENDTO_NOUSER
// draw vertical lines (drawn at ends of cells)
if (m_nGridLines == GVL_BOTH || m_nGridLines == GVL_VERT)
{
int x = nFixedColWidth;
for (col = minVisibleCol; col <= maxVisibleCol; col++)
{
if (GetColumnWidth(col) <= 0) continue;
x += GetColumnWidth(col);
pDC->MoveTo(x-1, nFixedRowHeight);
pDC->LineTo(x-1, VisRect.bottom);
}
}
// draw horizontal lines (drawn at bottom of each cell)
if (m_nGridLines == GVL_BOTH || m_nGridLines == GVL_HORZ)
{
int y = nFixedRowHeight;
for (row = minVisibleRow; row <= maxVisibleRow; row++)
{
if (GetRowHeight(row) <= 0) continue;
y += GetRowHeight(row);
pDC->MoveTo(nFixedColWidth, y-1);
pDC->LineTo(VisRect.right, y-1);
}
}
pDC->SelectStockObject(NULL_PEN);
// Let parent know it can discard it's data if it needs to.
if (GetVirtualMode())
SendCacheHintToParent(CCellRange(-1,-1,-1,-1));
#ifdef _DEBUG
LARGE_INTEGER iEndCount;
QueryPerformanceCounter(&iEndCount);
TRACE1("Draw counter ticks: %d\n", iEndCount.LowPart-iStartCount.LowPart);
#endif
}
