File Viewer Toolbar Buttons - Win32 Programmer's Reference

Custom Search

File Viewer Toolbar Buttons

A file viewer must include a toolbar with a single button tied to the Open File for Editing menu item on the File menu described previously. The image in this button is a 16- by 15-pixel bitmap derived from the icon of the application that would be started if the user opened the file from the shell (using the shell's association route). The image is obtained by calling the SHGetFileInfo function with the path of the file. If this function fails, a file viewer can include a button that contains its own image and attempt to start the parent application, or the file viewer can remove the button and disable the Open File for Editing menu item on the File menu. This single button must be the leftmost item on the toolbar and must be separated from any other buttons that are specific to the file viewer.

Other buttons should correspond roughly to the functions present in the file viewer menus. A file viewer that supports a Font menu item should have Increase Font Size and Decrease Font Size buttons. Other file viewer classes may need to include printing and rotation buttons on the toolbar.

A standard toolbar button is the Replace Window button. The default behavior for file viewers is for a new file viewer instance to be created whenever the user chooses the Quick View menu item. When the Replace Window button is toggled to the on position, however, a new instance is not created; instead, the contents of the relevant file viewer window are replaced by a view of the new file.

All buttons should have a corresponding tooltip control that displays some context information when the mouse cursor is positioned on the button. The standard Windows 95 toolbar control provides built-in support for tooltip controls such that you only have to provide the text string. <> The following illustration shows a tooltip control for a toolbar button.

The recommended tooltip strings for various toolbar buttons follow.

Toolbar button	Tooltip string
Open File for Editing	"Open File for Editing"
Font Increase	"Increase Font Size"
Font Decrease	"Decrease Font Size"
Small View	"Toggle view size"
Landscape	"Toggle portrait/landscape"
Rotate [Again]	"Rotate image 90 degrees"
Replace Window	"Replace Window"

Last news from Greatis Software

    Nostalgia .Net     .Net is powerful, but not all-powerful, so sometimes we need to use Win32 API for our .Net applications. It's simple enough with Platform Invoke if you have Win32 skill, but we do not always have time to dig the ancient documentation, declare the special types that are compatible with Win32, find the values of the Win32's constants and so on. Nostalgia .Net offers several simple-to-use classes, and components that will allow you to forget about the headache of Win32 and just use the power of Win32 in your application the same way as you use the native. Net classes. More »

Recommended software for developers

    Ultimate Pack     Component pack for Delphi and C++ Builder that contains runtime form designer, runtime object inspector, print suite and much more for the very special price. More »

    Form Designer .Net     Unique runtime form design solution that allows to edit any form in .Net WinForms application at runtime with full source codes for only 300 euro! More »

    Print Suite .Net     Print Suite .Net is a set of components for easy printing texts, images and grids from your WinForms applications. Full C# source codes are available More »

    Gradient Controls .Net     Gradient Controls .Net offers controls with gradient background feature. Labels, panels and so on... Full C# source codes are available More »

    Greatis iGrid     iGrid plots drawing grid right over your desktop, so you can use it everywhere, with any drawing application without any special plugins for different graphic editors. More »

All the contacts and projects

Dmitry Vasiliev (just.dmitry)

More Online Helps

Win32 Programmer's Reference
Win32 Multimedia Programmer's Reference
OLE Programmer's Reference
Microsoft Windows Pen API Programmer's Reference
Microsoft Windows Sockets 2 Reference
Microsoft Windows Telephony API (TAPI) Programmer's Reference
Unix Manual Pages

greatis just4fun network