Delphi Stringgrid Common Properties and common operations

The Stringgrid component is used to create a grid of display strings similar to spreadsheets. It simplifies the manipulation of strings and related objects in tables. The Stringgrid component provides many properties that control the idea of a network, as well as events and methods that respond to user actions using the structure of the table. Stringgrid has the effect of associating objects with each string in the grid, which is the information or behavior that the user encapsulates as a string representation.

First, Delphi Stringgrid control properties and instructions for use

1. Fixed rows and fixed columns: (when there is no fixed column, the width and height of each cell cannot be adjusted at run time)

Stringgrid.fixedcols: = fixed line number;

Stringgrid.fixedrows: = fixed number of columns;

Stringgrid.fixedcolor: = fixed row and column color;

Stringgrid.color: = The color of the invariant row (data area);

2. Width and height of data area column:

Stringgrid.defaultcolwidth: = The width of the internal setting;

Stringgrid.defaultrowheight: = All the height of the internal setting;

Stringgrid.colwidths[index:longint]:= the width of an entire row of a row;

stringgrid.rowheights[index:longint]:= the height of an entire column of a column;

3. Data area (CELL) designation (stops a row in the upper-left corner of the data area)

Stringgrid.leftcol:= a line;

stringgrid.toprow:= a column;

4. Focus moves to a cell:

Stringgrid.row:=?;

Stringgrid.col:=?;

5, set the number of rows and columns of the data area: (including fixed rows, columns are also counted inside)

Stringgrid.rowcount:=?;

Stringgrid.colcount:=?;

6. Assign a value to a cell (starting from 0):

Stringgrid.cells[col value, row value]:= string;

7. Determine which cell the mouse is in

In the mouse event of Stringgrid (Up,down or move):

VAR C, R:longint;

Stringgrid.mousetocell (X,Y,C,R); {x, y passed in by mouse event}

{Retrieve C, R is the current col, row value}

8. Stringgrid's Options properties:

To open a closed-lease in the execution of an options function such as ' gotabs ', you can do the following:

Open: stringgrid.options:= stringgrid.options + [gotabs];

Close: stringgrid.options:= stringgrid.options-[gotabs];

Gofixedhorzline a horizontal split line between fixed columns

Gofixedvertline vertical split lines between fixed rows

Gohorzline horizontal split lines between scrollable columns

Govertline vertical split lines between scrollable rows

Gorangeselect can be a multiple-selection unit, and if Goediting is included, Gorangeselect is ignored.

Godrawfocusselected with the mouse multiple selection, the first selected unit is anti-white

Gorowsizing with mouse to change sizing

Gocolsizing with mouse to change line width

Gorowmoving to move scrollable rows with the mouse

Gocolmoving to move scrollable columns with the mouse

Goediting the contents of an editable unit

The Goalwaysshoweditor table is always in edit mode, and no F2 or enter is required to have cursors waiting for input. If the options do not contain goediting or contain gorowselect, the goalwaysshoweditor is not valid.

Gotabs tab and shift+tab to switch table cells

Gorowselect with a mouse click to select an entire column (also with the mouse can be multiple choice of mutual exclusion)

When the gothumbtracking scrolls, the grid moves, and the grid moves.

First, the Delphi Stringgrid control's common operation code

Initialize the first row and first column of the Stirnggrid

Procedure Trefercontentform.setsgridtitle (Sgrid:tsuistringgrid);

Var

Colindex, Rowindex:integer;

Begin

Draw the first line (title bar)

For colindex: = 1 to Sgrid.colcount do

Begin

Sgrid.cells[colindex, 0]: = ' column name ' + Chr (ord (' A ')-1 + colindex);

End

Draw the first column (number bar)

Sgrid.colwidths[0]: = 30;

Sgrid.cells[0, 0]: = ' sequence ';

For RowIndex: = 1 to Sgrid.rowcount-1 do

Begin

Sgrid.cells[0, RowIndex]: = IntToStr (RowIndex);

End

End

Clear Stirnggrid, specify the number of rows and columns

Procedure Trefercontentform.clearsgrid (Sgrid:tsuistringgrid; arow, Acol:integer);

Var

I:integer;

Begin

Sgrid.rowcount: = Arow;

Sgrid.colcount: = Acol;

For I: = 0 to Sgrid.rowcount-1 do//If the table header is not clear starting from 1

Sgrid.rows[i]. Clear;

Setsgridtitle (Sgrid);

End

Add a row

Procedure Trefercontentform.mmin1click (Sender:tobject);

Var

Sgrid:tsuistringgrid;

Begin

Sgrid: = Tsuistringgrid (suipmsgrid.popupcomponent);

If Sgrid <> Nil Then

Begin

Sgrid.rowcount: = Sgrid.rowcount + 1;

Setsgridtitle (Sgrid);

End

End

Insert a row

Procedure Trefercontentform.mmin2click (Sender:tobject);

Var

I, Currow:integer;

Sgrid:tsuistringgrid;

Begin

Sgrid: = Tsuistringgrid (suipmsgrid.popupcomponent);

If Sgrid <> Nil Then

Begin

Currow: = Sgrid.row; Record the position of the currently selected row

Sgrid.rowcount: = Sgrid.rowcount + 1;

For I: = sgrid.rowcount-1 downto Currow + 1 Do

Sgrid.rows[i]: = Sgrid.rows[i-1];

Sgrid.rows[currow]. Clear;

Setsgridtitle (Sgrid);

End

End

Delete the current row

Procedure Trefercontentform.mmin3click (Sender:tobject);

Var

I:integer;

Sgrid:tsuistringgrid;

Begin

Sgrid: = Tsuistringgrid (suipmsgrid.popupcomponent);

If Sgrid <> Nil Then

Begin

For I: = Sgrid.row to Sgrid.rowcount-1 do

Sgrid.rows[i]: = sgrid.rows[i + 1];

Sgrid.rowcount: = sgrid.rowcount-1; Delete

Setsgridtitle (Sgrid);

End

End

Add a column

Procedure Trefercontentform.mmin5click (Sender:tobject);

Var

Sgrid:tsuistringgrid;

Begin

Sgrid: = Tsuistringgrid (suipmsgrid.popupcomponent);

If Sgrid <> Nil Then

Sgrid.colcount: = Sgrid.colcount + 1;

Setsgridtitle (Sgrid);

End

Insert a column

Procedure Trefercontentform.mmin6click (Sender:tobject);

Var

I, Curcol:integer;

Sgrid:tsuistringgrid;

Begin

Sgrid: = Tsuistringgrid (suipmsgrid.popupcomponent);

If Sgrid <> Nil Then

Begin

Curcol: = Sgrid.col; Record the position of the currently selected row

Sgrid.colcount: = Sgrid.colcount + 1;

For I: = sgrid.colcount-1 downto Curcol + 1 Do

Sgrid.cols[i]: = Sgrid.cols[i-1];

Sgrid.cols[curcol]. Clear;

End

Setsgridtitle (Sgrid);

End

Delete a column

Procedure Trefercontentform.mmin7click (Sender:tobject);

Var

I:integer;

Sgrid:tsuistringgrid;

Begin

Sgrid: = Tsuistringgrid (suipmsgrid.popupcomponent);

If Sgrid <> Nil Then

Begin

For I: = Sgrid.col to Sgrid.colcount-1 do

Sgrid.cols[i]: = sgrid.cols[i + 1];

Sgrid.colcount: = sgrid.colcount-1; Delete

End

Setsgridtitle (Sgrid);

End

Empty

Procedure Trefercontentform.mmin9click (Sender:tobject);

Var

Sgrid:tsuistringgrid;

Begin

Sgrid: = Tsuistringgrid (suipmsgrid.popupcomponent);

If Sgrid <> Nil Then

Begin

Clearsgrid (Sgrid, 5, 5)

End

Setsgridtitle (Sgrid);

End

Right-click to select cells

Procedure Trefercontentform.suistringgridcontentmousedown (Sender:tobject;

Button:tmousebutton; Shift:tshiftstate; X, Y:integer);

Begin

if (Button = mbright) Then

Begin

SendMessage (Sgridcontent.handle, wm_lbuttondown, 0, Makelong (x, y));

SendMessage (Sgridcontent.handle, Wm_lbuttonup, 0, Makelong (x, y));

End

End

Procedure Trefercontentform.formshow (Sender:tobject);

Begin

Setsgridtitle (sgridcontent);

End

The title bar and the number column is the content, center appears

Procedure Trefercontentform.sgridcontentdrawcell (Sender:tobject; Acol,

Arow:integer; Rect:trect; State:tgriddrawstate);

Var

s:string;

R:trect;

Begin

if (Acol = 0) or (arow = 0) Then

Begin

With Tsuistringgrid (Sender) do

Begin

Canvas.Brush.Color: = $00f0ddce;

Canvas.fillrect (Rect);

S: = Cells[acol, Arow];

r: = Rect;

DrawText (Canvas.handle, PChar (s), Length (s), R, Dt_center or Dt_singleline or dt_vcenter);

End

End

End

Delphi Stringgrid Common Properties and common operations