This event is generated just before the image is displayed.
[C++Builder] imagekitcontrolnameStartDispImage(TObject
*Sender, int OriginX, int OriginY, int ALeft, int ATop, int ARight,
int ABottom, double ScaleWidth)
[Delphi] imagekitcontrolnameStartDispImage(Sender:
TObject; OriginX, OriginY, ALeft, ATop, ARight, ABottom: Integer;
ScaleWidth, ScaleHeight: Double)
Parameters
| Name | Explanation |
|---|---|
| OriginX | The horizontal distance from the left side of the ImageKit Control to the left side of the image. (If the image is larger than the ImageKit Control in the horizontal direction, OriginX will equal 0.) |
| OriginY | The vertical distance from the top of the ImageKit Control to the top of the image. (If the image is larger than the ImageKit Control in the vertical direction, OriginY will equal 0.) |
| ALeft | The horizontal distance from the left side of the actual image to the left side of that portion of the image currently being displayed. |
| ATop | The vertical distance from the top of the actual image to the top of that portion of the image currently being displayed. |
| ARight | The horizontal distance from the left side of the actual image to the right side of that portion of the image currently being displayed. |
| ABottom | The vertical distance from the top of the actual image to the top of that portion of the image currently being displayed. |
| ScaleWidth | The horizontal scale between the displayed portion of the image and the actual image. |
| ScaleHeight | The vertical scale between the original image and the displayed image. |
The location and coordinates are in pixel units.
Explanation
The StartDispImage event is generated just before the image is displayed. If there are processes that you want to occur before an image is displayed, then place that code within this event.
The values of the OriginX and OriginY parameters will depend on the settings of the BorderVisible, Appearance, and Grad properties.