文件名称:
EHLib 6.3.171〖D7~XE5〗
开发工具:
文件大小: 9mb
下载次数: 0
上传时间: 2014-03-01
详细说明： + A new property SelectionDrawParams: TGridSelectionDrawParamsEh SelectionDrawParams property is added in DBGridEh and DBVertGridEh component, which allows you to customize the style of the currently selected cell. The property has the following sub-properties: SelectionStyle: TGridSelectionDrawStyleEh - paint style of the currently selected cell DrawFocusFrame: Boolean - Specifies whether to draw a dotted border around the currently selected cell. TGridSelectionStyleEh type contains the following values: gsdsDefaultEh - The default style is determined depending on the version of the OS and included Windows schemas and Delphi schemas.If Windows schemes is on the gssListViewThemedEh is used. If the active style of Delphi XE is on the GridThemed style is used. gsdsClassicEh - Classic style. The cell is painted by uniform clSelected color. gsdsGridThemedEh - The Delphi XE style is used to draw a celeced cell. gsdsListViewThemedEh - Windows ListView style is to draw a celeced cell. For a global management of style use the properties of the global object GridDrawStyle of TGridDrawStyleEh type. Use the procedure GridDefaultDrawStyleEh, SetGridDefaultDrawStyleEh, declared in a module GridsEh.pas to access GridDrawStyle the object. TGridDrawStyleEh type has the following properties: SelectionStyle: TGridSelectionStyleEh - style shading display the currently selected cell. DrawFocusFrame: Boolean - Specifies whether to draw a dotted border around the currently selected cell. To change the style of lighting in all grids of project, use code like this: unit MyMainForm; uses ... GridsEh; .... initialization GridDefaultDrawStyleEh.SelectionStyle := gsdsClassicEh; //Draw selected cell by the classic style. end. Setting Lookup relationships directly in the columns of the grid without using of lookup fields. + A new property - Column.LookupParams: TDBLookupDataEh in columns of DBGridEh and DBVertGridEh. The property allows you to setup lookup relationship in the grid columns. The property consists of the following sub-properties: KeyFieldNames: String - Identifies the field or fields in the dataset that must be matched in a lookup dataset when doing a lookup. LookupCache: Boolean - Determines whether the values of a lookup field are cached or looked up dynamically every time the current record in the dataset changes. LookupDataSet: TDataSet - Identifies the dataset used to look up field values. LookupDisplayFieldName: String - Identifies the field from the lookup dataset whose value is displayed in place of KeyFields. LookupKeyFieldNames: String - Identifies the field or fields in the lookup dataset to match when doing a lookup. Other features of this version + New property - TBaseColumnEh.CaseInsensitiveTextSearch: Boolean default True. Defines CaseInsensitive search in a text editor for the dropdownbox items. The property as added in columns of DBGridEh, DBVertGridEh and in TDBComboboxEh TDBLookupcomboboxEh controls. + LimitTextToListValues property of Boolean type. Defines to limit of values in the edit box by the list of values in the dropdownbox. The property as added in columns of DBGridEh DBVertGridEh and in TDBComboboxEh control. + In DBGridEh. At Design-Time it is allowed select DataSet from the list of Favorite DataSets DataSet is created via the Grid Design Panel. + In the Filter Drop-down lists of the DBGridEh it is allowed to selected several values quickly by pressing and dragging the pressed mouse. + In DBGridEh. If gioShowRowselCheckboxesEh value is in the DBGridEh.IndicatorOptions property then it is allowed to selected several records quickly by pressing and dragging the pressed mouse. + In DBGridEh.Pas A new property ColWidthsOptimizationMaxWaitingTime is added in the global class TDBGridEhCenter. This property can be assigned by a maximum time, which will be used to calculate the widths of the columns when the user double click on the line that separates columns. If the time of calculation of column widths is exceeded the value that was set in ColWidthsOptimizationMaxWaitingTime then grid cancels a calculation of the remaining records. The default value is 2000 (2 seconds). + New property ShowImageAndText is added in the TColumnTitleEh class. If ShowImageAndText = True and the title of the grid is set to display images from TitleParams.Images, then the text of the column header will be displayed along with the picture. If ShowImageAndText = False, it will only display the picture without the text. + New methods GetColCellParams GetTitleParams RowDetailPanelShow and RowDetailPanelHide are added in the global class TDBGridEhCenter, This mathods are virtual methods so you can override them in new derived class TMyDBGridEhCenter and control corresponding events for all Grids of the project. (DBVertGridsEh.pas) + A new property OptionsEh of TDBVHGridOptionsEh type is added in the TDBVertGridEh component. TDBVHGridOptionsEh type contains the following values: dgvhHighlightFocusEh - Highlight the current cell when the grid has focus. dgvhClearSelectionEh - Clear a selected area when a user navigates the current cell in the grid. dgvhEnterToNextRowEh - Move the current cell to the next row in a grid when user presses an Enter key. dgvhTabToNextRowEh - Move the current cell to the next row in a grid when user presses an Tab key. dgvhRowsIsTabControlsEh - Rows in the grid are operated as a list of edit controls. ie : - Does not allow to leave the current record of DataSet with keyboard keys. - When the current cell in the grid is on the last line, the Tab key on the grid translates the input focus to the next TabStop Control of a Form (dgvhTabToNextRowEh property must be included). - When the current cell in the grid is on the first line , then by Alt+Tab key in the Grid will put focus to the previous TabStop Control of a Form (dgvhTabToNextRowEh property must be included). + TDBVertGridEh allows to select lines and rectangular region of cells with mouse or keyboard and supports ClipBoard operations. + A new property - AllowedSelections of TDBVertGridAllowedSelectionsEh. Specifies the permitted types of selections in the grid. vgstRowsEh - Allows to select lines in the grid with the mouse or with the keyboard. vgstRectangleEh - Allows the select square area in the grid with the mouse or with the keyboard. vgstAllEh - Allows to the select all the data in the grid by a Ctrl+A key combination. + A new property - EditActions of TGridEditActionsEh type. Defines the permitted operations with the selected area. geaCutEh, geaCopyEh, geaPasteEh, geaDeleteEh, geaSelectAllEh. + New Property - Selection of TDBVertGridSelectionEh type. The property contains information about the selected area in the Grid. + Added TDBVertGridEh.OnRowCategoriesNodeExpanded and TDBVertGridEh.OnRowCategoriesNodeCollapsed events. (DataDriverEh.pas) * Changes: Published parameter - TConnectionProviderEh.OnGetServerSpecOperations: TResolverGetServerSpecOperationsEh was changed. Old declaration: TResolverGetServerSpecOperationsEh = function (var Processed: Boolean): TServerSpecOperationsEh of object; New declaration: TResolverGetServerSpecOperationsEh = procedure (var Processed: Boolean; var ServerSpecOperations: TServerSpecOperationsEh) of object; Announcement via function caused an inexplicable error in compile-time in C++ Builder. (DBCtrlsEh.pas) + New events (OnCloseDropDownForm OnOpenDropDownForm) are added in TDBEditEh, TDBDateTimeEditEh, TDBComboBoxEh controls. ...展开收缩
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