[wxWidgets]_[中级]_[常用的wxGrid的总结]

来源：互联网发布：如何取消网络桥接编辑：程序博客网时间：2024/05/16 19:03

场景:

1. wxGrid是比较好用的可定制的table，支持单元格显示效果定制，合并，隐藏，局部刷新等等。总体来说，还是比较实用的控件。

总结:

1. 初始化

grid->CreateGrid(0, 0);grid->EnableGridLines(true);grid->SetRowLabelSize(32);grid->SetDefaultRowSize(140);grid->SetScrollLineX(1);wxFont font(9, wxFONTFAMILY_SWISS, wxNORMAL, wxNORMAL, false, wxT("Arial"),wxFONTENCODING_ISO8859_1);grid->SetLabelFont(font);grid->SetSelectionMode(wxGrid::wxGridSelectCells);grid->HideCellEditControl();grid->SetEditable(true);grid->SetCellHighlightPenWidth(0);grid->EnableDragGridSize(false);grid->SetUseNativeColLabels(true);AddTitle(grid, wxT("."), 112, true);AddTitle(grid, wxT("."), 112, true);AddTitle(grid, wxT("."), 112, true);AddTitle(grid, wxT("."), 112, true);AddTitle(grid, wxT("."), 112, true);grid->SetColLabelSize(0);wxColor color = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);grid->SetSelectionBackground(color);

2.添加行

grid_->InsertRows(position, 1, false);DhPhotoCheckCellRender* render = new DhPhotoCheckCellRender();render->SetShowText(array[0]);render->CenterCheckOffset();grid_->SetReadOnly(position, 0, true);grid_->SetCellRenderer(position, 0, render);grid_->SetCellValue(position, 0, wxT(" "));

3.设置单元格渲染

class DhPhotoCheckCellRender: public wxGridCellRenderer

4.使用render和editor,wxGrid使用这两个比较特殊，它在内部维护一个对render和editor的引用计数.在每次GetRender和GetEidtor返回前会InCRef,所以每次返回后需要DecRef.

DhPhotoCheckCellRender* render =(DhPhotoCheckCellRender*) current_show_grid_->GetCellRenderer(i, j);render->DecRef();

注意，这里如果减的次数过多就会崩溃。看chm文档有描述.

5.wxGrid对动态增加列貌似支持不好，我Del 全部列再新增列就会崩溃，可能是bug吧，这个问题已经找到原因，是del全部后insert行就会触发一个wxEVT_GRID_SELECT_CELL事件，很奇怪，之后这个事件触发函数调用了一个没创建的自定义render就会崩溃.

grid_->DeleteAllRows();grid_->HideOtherCols(5);

~~备注(wx3.0.0): 快速DeleteRows并且InsertRows经常会崩溃，临时解决方案是先AppendRows到末尾，之后再删除前面的.~~

6.绑定常用的事件

grid->Connect(wxEVT_GRID_SELECT_CELL,wxGridEventHandler(DhRecoveryKindWindow::OnCellLeftClick), NULL,this);

7.设置列宽和表头

SetColLabelValue(index, label);SetColSize(index, width);

8.添加表头

AddTitle

int col_num = grid->GetNumberCols();grid->AppendCols();if (is_show){grid->ShowCol(col_num);grid->SetColLabelValue(col_num, grid_title);grid->SetColSize(col_num, grid_width);grid->SetColLabelAlignment(wxALIGN_CENTRE, wxALIGN_CENTRE);}else{grid->HideCol(col_num);}

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