Solved

Controlling folder combo in an Open Dialog in Win32

Posted on 1997-06-03
7
536 Views
Last Modified: 2013-12-03
Is there a way to control folder combo box ('Look in:')
from a hook function of an Open Dialog under Win32?
I need to select folder depending on a value in a
file-filter combo.
0
Comment
Question by:magnezko
  • 3
  • 3
7 Comments
 
LVL 4

Expert Comment

by:AVaulin
Comment Utility
You must handle WM_NOTIFY CDN_TYPECHANGE message, detect which folder selected, change it how you want and send WM_NOTIFY CDN_FOLDERCHANGE.
0
 

Author Comment

by:magnezko
Comment Utility
I do handle CDN_TYPECHANGE and when handling this notification
message I want to change folder (directory) in folder combo
from my code, not from user interface.
This cannot be done by sending notification CDN_FOLDERCHANGE
which is used to notify me about change in that combo.
0
 
LVL 4

Expert Comment

by:AVaulin
Comment Utility
Try change m_pofnTemp->lpstrInitialDir and call Update function.
0
Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

 

Author Comment

by:magnezko
Comment Utility
Which "Update function" ???

I'm working solely with WIN32 API, no class libraries,
such as MFC or OWL ...


0
 
LVL 4

Expert Comment

by:AVaulin
Comment Utility
I didn't say that you don't use any library. So can you show how do you create dialog and handle CDN_TYPECHANGE message.
0
 
LVL 15

Accepted Solution

by:
NickRepin earned 50 total points
Comment Utility
1. You should obtain the dialog item id for the 'folder' combobox.
This can be done by opening COMDLG32.DLL with any resource editor. You can also refer to DLGS.H .
cmb2 == 0x471 == 'Look in' combobox
edt1 == 0x480 =='File name' combobox
1 == 'Open' pushbutton

2. In response to CDN_TYPECHANGE, select appropriate
folder. I am not sure you can do this by changing lpstrInitialDir.
But you can simulate user input in 'File name' field and pressing 'Open'. Eg, we need to change current dir to 'c:\temp'.

// Prevent redrawing
SendDlgItemMessage(hdlg,edt1,WM_SETREDRAW,FALSE);
SendDlgItemMessage(hdlg,1,WM_SETREDRAW,FALSE);
// Changing text in 'File name'. Here you can save previous text
SendDlgItemMessage(hdlg,edt1,WM_SETTEXT,0,"c:\\temp"
// Emulating pressing 'Open'
SendDlgItemMessage(hdlg,1,BM_CLICK);
// Now dialog should change current folder to 'c:\temp'
// Here you can restore previous text in 'File name'

// Allow redrawing
SendDlgItemMessage(hdlg,edt1,WM_SETREDRAW,TRUE);
SendDlgItemMessage(hdlg,1,WM_SETREDRAW,TRUE);

// Also here you can update edt1 or/and 'Open' pushbutton
// (although it is not necessary in this case) by using InvalidateRect() and UpdateWindow().

0
 

Author Comment

by:magnezko
Comment Utility
EXCELENT! THANK YOU!

0

Featured Post

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
Insert filename column as column a 18 70
Need example 5 100
Example of WebAPI 7 29
SignTool Error with Windows 10 5 96
This article describes how to programmatically preset the "Pages per Sheet" option that's available with most printer drivers.   This setting lets you do "n-Up" printing, where two, four, or more pages are printed on each sheet of paper. If your …
After several hours of googling I could not gather any information on this topic. There are several ways of controlling the USB port connected to any storage device. The best example of that is by changing the registry value of "HKEY_LOCAL_MACHINE\S…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
This video discusses moving either the default database or any database to a new volume.

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now