Image::GetPropertyItem Method (Int32)
Gets the specified property item from this Image.
Assembly: System.Drawing (in System.Drawing.dll)
Parameters
- propid
-
Type:
System::Int32
The ID of the property item to get.
| Exception | Condition |
|---|---|
| ArgumentException | The image format of this image does not support property items. |
For a list of property item IDs and links to more information, see Id.
It is difficult to set property items, because the PropertyItem class has no public constructors. One way to work around this restriction is to obtain a PropertyItem by retrieving the PropertyItems property value or calling the GetPropertyItem method of an Image that already has property items. Then you can set the fields of the PropertyItem and pass it to SetPropertyItem.
The following code example demonstrates how to use the GetPropertyItem and SetPropertyItem methods. This example calls GetPropertyItem passing an ID value. For a list of ID values see, Id. This example is designed to be used with Windows Forms. To run this example, paste it into a form, and handle the form's Paint event by calling the DemonstratePropertyItem method, passing e as PaintEventArgs.
private: void DemonstratePropertyItem( PaintEventArgs^ e ) { // Create two images. Image^ image1 = Image::FromFile( "c:\\FakePhoto1.jpg" ); Image^ image2 = Image::FromFile( "c:\\FakePhoto2.jpg" ); // Get a PropertyItem from image1. PropertyItem^ propItem = image1->GetPropertyItem( 20624 ); // Change the ID of the PropertyItem. propItem->Id = 20625; // Set the PropertyItem for image2. image2->SetPropertyItem( propItem ); // Draw the image. e->Graphics->DrawImage( image2, 20.0F, 20.0F ); }
Available since 1.1