|
Hook Procedures for Common Dialog Boxes
For each of the common dialog boxes, you can enable a hook procedure to
process messages from the default dialog box procedure. There are two general types
of common dialog hook procedures:
- The standard hook procedure used with most common dialog boxes
- The Explorer-style hook procedure supported by the Open and Save As dialog
boxes
When you provide a standard hook procedure for one of the common dialog boxes,
the default dialog box procedure handles its messages as follows.
Message
| Handling
| WM_INITDIALOG
| The default dialog box procedure processes the message before passing it to
the hook procedure. The message's lParam parameter is a pointer to the initialization structure specified when the
dialog was created.
| All other messages
| The hook procedure receives the message first. Then, the return value of the
hook procedure determines whether the default dialog procedure processes the
message or ignores it.
|
For the Explorer-style Open and Save As dialog boxes, the hook procedure does
not receive messages intended for the standard controls in the common dialog
box. Instead, it receives notification messages from the dialog box and messages
for any additional controls that you defined in a custom template. For more
information, see Explorer-Style Hook Procedures.
To enable a hook procedure, set an ENABLEHOOK value in the Flags member of the corresponding structure for the dialog box. If an ENABLEHOOK
flag is set, an lpfnHook member of the structure must specify the address of the hook procedure.
The following table shows the type of hook procedure to provide for each of
the common dialog boxes.
For the Page Setup dialog box, you can also specify a PagePaintHook hook procedure. This is a special hook procedure that you can use to
customize the appearance of the sample page displayed by the Page Setup dialog box.
Note The Print Setup dialog box has been superseded by the Page Setup dialog box,
which should be used by new applications written for Windows 95 or for Windows
NT versions 3.51 or later. However, for compatibility with earlier versions of
Windows, the PrintDlg function continues to support display of the Print Setup dialog box. You can
provide a SetupHookProc hook procedure for the Print Setup dialog box.
| 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 projectsDmitry Vasiliev (just.dmitry)
Related LinksSoftware for Visual Studio .NET developers
Software for Delphi and C++ Builder developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET 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
|
