The information in this article applies to:
When creating an ActiveX control using WFC, custom events are not fired in the target/client application.
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.
This bug was corrected in Microsoft® Visual Studio® 6.0 Service Pack 3. For more information about Visual Studio service packs, please see the following articles in the Microsoft Knowledge Base:
Q194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why
Q194295 HOWTO: Tell That Visual Studio 6.0 Service Packs Are Installed
Private Sub MyControl1_errorEvent(ByVal Parameter0 As Object, ByVal Parameter1 As Object) End Sub
Do the same for the Form Load event and insert code that will cause your custom event to fire. The following code handles the MSDN errorEvent sample mentioned below. It should look something like this:
Private Sub Form_Load() MyControl1.myProp = 201 End Sub
Notice that the custom event doesn't get fired whenever the myProp property value exceeds 200.
For convenience, here is the code pasted from the MSDN documentation:
// MyControl.java import com.ms.wfc.ui.* ; import com.ms.wfc.core.* ; import com.ms.lang.Delegate; /** * @com.register(clsid=428B4065-E8B5-11D2-A801-00C04FB624C0, typelib=428B4064-E8B5-11D2-A801-00C04FB624C0) */ public class MyControl extends Control { private int myProp = 1; public int getMyProp() { return myProp; } public void setMyProp(int value) { // Fires error event if property value exceeds 200 if(value > 200) { onErrorEvent(new ErrorEvent(1020, "Invalid value")); } myProp = value; } protected void onPaint( PaintEvent p) { super.onPaint(p); Graphics g=p.graphics; g.drawString( getText(), 0, 0); } // event setup to be able to fire event "ErrorEvent" private ErrorEventHandler errDelegate = null; public final void addOnErrorEvent(ErrorEventHandler handler) { errDelegate = (ErrorEventHandler)Delegate.combine(errDelegate, handler); } public final void removeOnErrorEvent(ErrorEventHandler handler) { errDelegate = (ErrorEventHandler)Delegate.remove(errDelegate, handler); } protected void onErrorEvent(ErrorEvent event) { if(errDelegate != null) { errDelegate.invoke(this, event); } } public static class ClassInfo extends Control.ClassInfo { public static final PropertyInfo myProp = new PropertyInfo(MyControl.class, "myProp", int.class); public void getProperties(IProperties props) { super.getProperties(props); props.add(myProp); } public static EventInfo evt = new EventInfo(MyControl.class, "errorEvent", ErrorEventHandler.class); public void getEvents(IEvents events) { super.getEvents(events); events.add(evt); } } } // ErrorEventHandler.java import com.ms.wfc.core.*; public final multicast delegate void ErrorEventHandler(Object sender, ErrorEvent event) ; // ErrorEvent.java import com.ms.wfc.core.*; public class ErrorEvent extends Event { public final int errorNumber; public final String errorText; public ErrorEvent( int eNum, String eTxt) { this.errorNumber = eNum; this.errorText = eTxt; } }
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