GetRectCoordinatesOnViewer Method (GdViewer)
In This Topic
Gets data of the currently defined rectangle of area selection refering to the displayed viewer area. This method gets the rectangle's coordinates and dimensions, in pixels, which determine the rectangle of selection related to the document displayed in the GdViewer control. The resulting values correspond to the actual viewer area.
Be aware that the rectangle of selection always relates to the displayed document. You can find out, if this rectangle is defined and drawn, using the IsRect method.
Syntax
'Declaration
Public Sub GetRectCoordinatesOnViewer( _
ByRef As Integer, _
ByRef As Integer, _
ByRef As Integer, _
ByRef As Integer _
)
public void GetRectCoordinatesOnViewer(
ref int ,
ref int ,
ref int ,
ref int
)
public procedure GetRectCoordinatesOnViewer(
var : Integer;
var : Integer;
var : Integer;
var : Integer
);
public function GetRectCoordinatesOnViewer(
: int,
: int,
: int,
: int
);
public: void GetRectCoordinatesOnViewer(
ref int ,
ref int ,
ref int ,
ref int
)
public:
void GetRectCoordinatesOnViewer(
int% ,
int% ,
int% ,
int%
)
Parameters
- Left
- Output parameter. The horizontal (X) coordinate (0-based) of the top left point, in pixels, of the rectangle of selection, related to the viewer area.
- Top
- Output parameter. The vertical (Y) coordinate (0-based) of the top left point, in pixels, of the rectangle of selection, related to the viewer area.
- Width
- Output parameter. The width, in pixels, of the rectangle of selection.
- Height
- Output parameter. The height, in pixels, of the rectangle of selection.
Example
How to translate the rectangle's coordinates related to the document to the coordinates related to the viewer.
'We assume that the GdViewer1 control has been properly integrated
'and your document has been properly displayed as well.
Dim left1 As Integer = 0, top1 As Integer = 0, width1 As Integer = 0, height1 As Integer = 0
Dim left2 As Integer = 0, top2 As Integer = 0, width2 As Integer = 0, height2 As Integer = 0
GdViewer1.RectBorderColor = GdViewer1.ARGB(255, 69, 0)
GdViewer1.RectBorderSize = 2
GdViewer1.GetDisplayedArea(left1, top1, width1, height1)
GdViewer1.SetRectCoordinatesOnDocument(left1, top1, width1, height1)
GdViewer1.GetRectCoordinatesOnViewer(left2, top2, width2, height2)
MessageBox.Show("The displayed area of the document: " + left1 + ", " + top1 + " w=" + width1 + ", h=" + height1 + vbCrLf +
"The rectangle of selection (viewer-related): " + left2 + ", " + top2 + " w=" + width2 + ", h=" + height2, "GdViewer.GetRectCoordinatesOnViewer")
//We assume that the GdViewer1 control has been properly integrated
//and your document has been properly displayed as well.
int left1 = 0, top1 = 0, width1 = 0, height1 = 0;
int left2 = 0, top2 = 0, width2 = 0, height2 = 0;
GdViewer1.RectBorderColor = GdViewer1.ARGB(255, 69, 0);
GdViewer1.RectBorderSize = 2;
GdViewer1.GetDisplayedArea(ref left1, ref top1, ref width1, ref height1);
GdViewer1.SetRectCoordinatesOnDocument(left1, top1, width1, height1);
GdViewer1.GetRectCoordinatesOnViewer(ref left2, ref top2, ref width2, ref height2);
MessageBox.Show("The displayed area of the document: " + left1 + ", " + top1 + " w=" + width1 + ", h=" + height1 +
"\nThe rectangle of selection (viewer-related): " + left2 + ", " + top2 + " w=" + width2 + ", h=" + height2, "GdViewer.GetRectCoordinatesOnViewer");
Example
How to translate the rectangle's coordinates related to the document to the coordinates related to the viewer.
'We assume that the GdViewer1 control has been properly integrated
'and your document has been properly displayed as well.
Dim left1 As Integer = 0, top1 As Integer = 0, width1 As Integer = 0, height1 As Integer = 0
Dim left2 As Integer = 0, top2 As Integer = 0, width2 As Integer = 0, height2 As Integer = 0
GdViewer1.RectBorderColor = GdViewer1.ARGB(255, 69, 0)
GdViewer1.RectBorderSize = 2
GdViewer1.GetDisplayedArea(left1, top1, width1, height1)
GdViewer1.SetRectCoordinatesOnDocument(left1, top1, width1, height1)
GdViewer1.GetRectCoordinatesOnViewer(left2, top2, width2, height2)
MessageBox.Show("The displayed area of the document: " + left1 + ", " + top1 + " w=" + width1 + ", h=" + height1 + vbCrLf +
"The rectangle of selection (viewer-related): " + left2 + ", " + top2 + " w=" + width2 + ", h=" + height2, "GdViewer.GetRectCoordinatesOnViewer")
//We assume that the GdViewer1 control has been properly integrated
//and your document has been properly displayed as well.
int left1 = 0, top1 = 0, width1 = 0, height1 = 0;
int left2 = 0, top2 = 0, width2 = 0, height2 = 0;
GdViewer1.RectBorderColor = GdViewer1.ARGB(255, 69, 0);
GdViewer1.RectBorderSize = 2;
GdViewer1.GetDisplayedArea(ref left1, ref top1, ref width1, ref height1);
GdViewer1.SetRectCoordinatesOnDocument(left1, top1, width1, height1);
GdViewer1.GetRectCoordinatesOnViewer(ref left2, ref top2, ref width2, ref height2);
MessageBox.Show("The displayed area of the document: " + left1 + ", " + top1 + " w=" + width1 + ", h=" + height1 +
"\nThe rectangle of selection (viewer-related): " + left2 + ", " + top2 + " w=" + width2 + ", h=" + height2, "GdViewer.GetRectCoordinatesOnViewer");
See Also