Please choose your language:. They offer full support for context-sensitive help and file links. The package includes the unit Vcl. Applications currently using CHM files for application help can switch to eWriter help with basically no changes. The distributable eWriter viewer is included.
HelpNamespace property. If the CHM file is located in the same directory with your application's executable file, you can set only the filename. To enable the help [? Now you can use the mentioned control properties to provide Help for a control when the user focuses it and presses F1 or selects the [?
For example, the control can display the topic with Context Id Displaying a help topic by its Context Id Help. It consists of adding a button with a question mark and then creating the words that would display eventually. When you create this type of dialog box, the user can click the question marked button and click a control. This causes the mouse pointer to be equipped with a question mark.
The user can then click a control and a yellow box would appear for that control, providing help. To make it easy to provide online help in a Visual Studio application, the. After adding this control to the application, the form and all controls on it receive a new property labeled HelpString On HelpProvider1.
You can then type the desired string in the field of the Properties window for each control that would display context-sensitive help. EventArgs Handles MenuItem2. It is called context-sensitive because it provides its assistance on only a control of the form.
Another technique, in fact highly supported with any commercial program, consists of providing an external application that resembles a book. This allows the user to get more detailed information about almost any aspect of the application. To provide online help in a Visual Studio application, you can use an external system. This consists of creating a complete application whose only purpose is to describe another application.
This means that, in the beginning, both applications are not related in any way. You create these files anyway you like but, in this case, they are meant to provide support for a specific application.
Therefore, when creating the files, try to divide them by issues. For example, you can create a file for each form of your application and use that file to describe what the form or dialog box is used for. You still can use any approach to create the files you would need.
Experience will guide you eventually into knowing what to put in those files. It allows an employee to receive requests from a customer, based on what is available in the menu. As a commercial business, the application calculates the total amount. The top section of the form, also called the title bar, is equipped with a menu called the main menu.
To use this main menu, you can click one of the top-level words such as File. Once an order is ready, the user can click the Calculate Total button. This evaluates the total price of the order and displays it in the text box on the right side of Order Total.
After a customer has placed an order and given money to the clerk, the user can display this dialog box. When it comes up, the top text box of this window already displays the amount of the customer's order. The user can then simply enter the amount the customer gave in the Amount Tended text box. After using this dialog box, the user can close it by clicking Close. Click the HTML files. For this perform the following steps:. To make a help file call button work properly, you have to put the CHM file and the executable.
NET application file in the same folder. If it is necessary to put the help file separately from the application file, you have to use the following code:. The element code should look like this:. In this case, every time you change the help file location you have to change the path in the control element code to an actual one. Be careful in entering control element codes; strictly follow the syntax shown in the examples.
This is necessary condition for proper work of control elements. The alternative way of opening a help file consists in calling a definite help file topics which correspond to definite elements of. You can use this way separately as well as together with the method described above. If you focus on particular control element and press «F1» button a corresponding help file topic will come up. To implement such method you have to perform the following steps:. Multiple «HelpProvider» components usage is allowed.
This can be useful if information about different elements is located in different help files. Also you can use separate components for separate forms. In case help file is located in the same folder with executable application file, it is enough to enter filename only. If files are located in separate folders, you have to enter a full path. Every time you change a help file location you have to change «HelpNamespace» to a path to an actual one. The number of parameters «HelpKeyword…» and «HelpProvider…» in object properties corresponds to the number of used «HelpProvider» components,and digit in a parameter name corresponds to the number of the component.
Be careful in filling these fields. Besides calling of particular help file topics by corresponding HelpIDs, «HelpProvider» component also can be used for addressing topics by other parameters. To setup a particular topics call, you have to set corresponding values of «HelpKeyword on Help Provider1» and «HelpNavigator on Help Provider1» fields in element properties. To setup a particular help files call by pressing «F1» button, perform the following steps:.
This way of help call allows you to set addressing and searching in a help system flexibly. Also it allows using of help file or its separate topics for each separate form or element. If you want to call a particular help system topic by pressing a button, you have to use the following code fragments:.
How to Create Help Files for. From the article you will know: How to create and adjust a Dr.
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