Add "Remarks" and "Example" headings for error references in range [C3711, C3740]

Author: Rageking8

docs/error-messages/compiler-errors-2/compiler-error-c3711.md

@@ -10,8 +10,12 @@ ms.assetid: 26d581cc-2153-4ee0-b814-a371184be3e1
 
 > 'method': an non-managed event source method must return void or an integral type
 
+## Remarks
+
 You defined a method in the event source that did not return void or an integral type. To fix this error, make the event and event handler have a return type of **`void`** or an integral type such as **`int`** or **`long`**.
 
+## Example
+
 The following sample generates C3711:
 
 ```cpp

docs/error-messages/compiler-errors-2/compiler-error-c3712.md

@@ -10,8 +10,12 @@ ms.assetid: 65b1fcaf-be89-4c55-9e40-25ec03457253
 
 > 'method': an event handler method must return the same type as the source 'method'
 
+## Remarks
+
 You defined an event handler method that did not return the same type as the source event method. To fix this error, give the event handler method the same return type as that of the source event method.
 
+## Example
+
 The following sample generates C3712:
 
 ```cpp

docs/error-messages/compiler-errors-2/compiler-error-c3713.md

@@ -10,8 +10,12 @@ ms.assetid: 75c6b9b6-955b-49bd-9bc8-ced88b496a1f
 
 > 'method': an event handler method must have the same function parameters as the source 'method'
 
+## Remarks
+
 You defined an event handler method that did not use the same parameters as the source event method. To fix this error, give the event handler method the same parameters as those of the source event method.
 
+## Example
+
 The following sample generates C3713:
 
 ```cpp

docs/error-messages/compiler-errors-2/compiler-error-c3714.md

@@ -10,8 +10,12 @@ ms.assetid: 17718f75-5a37-4e42-912b-487e91008a95
 
 > 'method': an event handler method must have the same calling convention as the source 'method'
 
+## Remarks
+
 You defined an event handler method that did not use the same calling convention as the source event method. To fix this error, give the event handler method the same calling conventions as those of the source event method. For example, in the code below, make the calling conventions of `handler1` and `event1` match ([__cdecl](../../cpp/cdecl.md) or [__stdcall](../../cpp/stdcall.md) or others). Removing calling convention keywords from both declarations will also solve the problem, and cause `event1` and `handler1` to default to the [thiscall](../../cpp/thiscall.md) calling convention. See [Calling Conventions](../../cpp/calling-conventions.md) for more information.
 
+## Example
+
 The following sample generates C3714:
 
 ```cpp

docs/error-messages/compiler-errors-2/compiler-error-c3715.md

@@ -10,4 +10,6 @@ ms.assetid: ee5dce88-ddc4-4bdb-9464-47467ce1674f
 
 > 'pointer': must be a pointer to 'class'
 
+## Remarks
+
 You specified a pointer in [`__hook`](../../cpp/hook.md) or [`__unhook`](../../cpp/unhook.md) that did not point to a valid class. To fix this error, ensure that your **`__hook`** and **`__unhook`** calls specify pointers to valid classes.

docs/error-messages/compiler-errors-2/compiler-error-c3717.md

@@ -10,8 +10,12 @@ ms.assetid: ae4fceb1-2583-4577-b2f1-40971a017055
 
 > 'method': a method that fires events cannot be defined
 
+## Remarks
+
 You declared an event method that includes an implementation. An [__event](../../cpp/event.md) method declaration cannot have a definition. To fix this error, ensure that no event method declarations have definitions. For example, in the code below, remove the function body from the `event1` declaration as indicated by the comments.
 
+## Example
+
 The following sample generates C3717:
 
 ```cpp

docs/error-messages/compiler-errors-2/compiler-error-c3718.md

@@ -10,6 +10,8 @@ ms.assetid: 346b5205-c44d-49d3-b66a-96417d3d6986
 
 > can only call '*event*' in the context of a member function of the receiving class
 
+## Remarks
+
 The event can only be called from the receiving class.
 
 ## Example

docs/error-messages/compiler-errors-2/compiler-error-c3719.md

@@ -10,8 +10,12 @@ ms.assetid: d0d59d4e-babb-4480-9ef7-70cf1a28165c
 
 > 'interface': an interface based event source can only be used for COM events
 
+## Remarks
+
 You declared an interface in a non-COM context.
 
+## Example
+
 The following sample generates C3719:
 
 ```cpp

docs/error-messages/compiler-errors-2/compiler-error-c3721.md

@@ -10,6 +10,8 @@ ms.assetid: c696ca38-3e00-4875-abbe-7bce0f46930e
 
 > 'signature': incompatible signature for event
 
+## Remarks
+
 An event was declared incorrectly. For more information, see [__event](../../cpp/event.md).
 
 C3721 is only reachable using the obsolete compiler option **/clr:oldSyntax**.

docs/error-messages/compiler-errors-2/compiler-error-c3722.md

@@ -10,8 +10,12 @@ ms.assetid: 3cb28363-5eff-4548-bd0d-d5c615846353
 
 > a generic event is not allowed
 
+## Remarks
+
 The compiler only allows generic classes, structs, and functions.  For more information, see [Generics](../../extensions/generics-cpp-component-extensions.md).
 
+## Example
+
 The following sample generates C3722:
 
 ```cpp