[Solved] How can I prevent an MDI parent and child forms from resizing after loading a Pdf document

[Okey]

I have set the Doc in Parent Container, FitFullPage, and FitToWidth properties, all to no avail

[Nadya | Tech Support Engineer]

Hello, Okey,

May I ask you is your project .Net Framework or .Net? If you have a .NET project you may need to make a small change in your project file by adding an additional UseWPF tag, as described here: https://www.telerik.com/products/winforms/documentation/core/core-project-and-document-processing-library 

In case this does not help, you can also check the following article about some specifics when using  document processing libraries in a WinForms project: WinForms App becomes DPI-aware at runtime - Telerik UI for WinForms

Can you give these suggestions a try and let me know if they can resolve the issue on your side.

[Nadya | Tech Support Engineer]

Hello, Okey,

I have tested the FitFullPage and FitToWidth properties, and they are working as expected. More information about them is available here: WinForms PdfViewer UI Document Modes - Telerik UI for WinForms

It seems that you have a more custom scenario using an mdi parent. Can you please elaborate more? May I ask you to provide more details about your setup and what exactly you are trying to achieve regarding RadPdfViewer and its document modes? It would be great if you can demonstrate it in a sample project that mimics your initial setup. Thus, I would be able to assist you more effectively.

Looking forward to your reply.

Regards,
Nadya | Tech Support Engineer
Progress Telerik

[Okey]

I have an MDI parent form that also has the menu structure. All forms display as MDI child forms, including those with the RadPDFViewer control. When I load a document into the RadPdfViewer, the MDI parent and child forms shrinks. See attached Before and After Load Forms.