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Browse for Folder with a Quick Pick

, 16 Mar 2006 CPOL
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Customized version of the "Browse for folder" dialog. It creates quick picks to your selected directories.
Browse for folder quickpick window

Introduction

I was working on the SizeMe project when a user requested a feature. He asked for a predefined list over directories that he wanted to scan. I just finished reading the article Customizing the "Browse for folder" dialog and I got the idea of just customizing the common dialog. Here is the result.
Remember that the common dialogs are shown in the installed language of Windows. The picture shows the dialog with my language Norwegian. I also want to thank Hans Dietrich for his article XBrowseForFolder - Wrapper for SHBrowseForFolder. Some of the code used in the project has been inspired by his work.

Using the Code

The project can be used in either an MFC project or Win32. (The project has only been tested with the Visual Studio 6.0 environment. I don't know if it would work on the newer versions of Visual Studio, but I guess so).

First add the files Dirbrowse.cpp and DirBrowse.h to your project, then include the DirBrowse.h. There are two public functions that you need to use:

BOOL Show(char *szInitDir="");

Function Show results in TRUE if the user pressed OK, and FALSE on cancel/close. The szInitDir is optional and selects the startdir for the browser.

char* GetSelectedDir();

Function GetSelectedDir returns a string with the selected path.

Sample

Here is the quick win32 sample I wrote for handling the class:

#include <span class="code-string">"stdafx.h"</span>
#include <span class="code-string">"..\DirBrowse.h"</span>

#include <span class="code-keyword"><stdio.h></span>

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
     // TODO: Place code here.
    CDirBrowse m_dirbrowser(NULL, hInstance);
    
    if(m_dirbrowser.Show()==TRUE)
    {
        char Text[MAX_PATH*2];
        sprintf(Text, "You selected folder: %s", m_dirbrowser.GetSelectedDir());
        MessageBox(NULL, Text, "Browse for folder", MB_OK);
    }
    else
    {
        MessageBox(NULL, "You pressed the cancel button!", "Browse for folder", MB_OK);
    }

    return 0;
}

It is as simple as that. Take a look at the project to check out the MFC version of the same.

Header Customization

When I create classes that can be reused, I always create a lot of #defines. This class is no exception. Here is the defines list:

//#1
#define BROWSE_WIDTH            640
#define BROWSE_HEIGHT            420
#define BROWSE_LISTVIEW_SIZE        0.65
#define BROWSE_BORDER_VERT        4
#define BROWSE_BORDER_HORI        2
#define BROWSE_MAXENTRIES        20

//#2
//This is the message that we start with
#define BROWSE_MESSAGE            10101

//#3
//The name of our hypertext class
#define STATIC_HYPERTEXT_WINDOW_CLASS    "STATIC_HYPERTEXT"

//#4
//This is the font & size we use for showing the info
#define BROWSE_FONTNAME            "Verdana"
#define BROWSE_FONTSIZE            12

//#5
//The colors used
#define BROWSE_SELECTCOLOR        RGB(0,0,255)
#define BROWSE_SELECTCOLORHOVER        RGB(50,105,255)
#define BROWSE_DIRCOLOR            RGB(0,0,200)
#define BROWSE_DIRCOLORHOVER        RGB(100,100,250)

//#6
//The registry variables
#define BROWSE_REGISTRY_ROOT        HKEY_CURRENT_USER
#define BROWSE_REGISTRY_PATH        "Software\\DirBrowser"

//#7
//Strings used
#define BROWSE_TEXT_SHORTCUTS       "Shortcuts"
#define BROWSE_TEXT_HELP            "Please select a folder in the list and press the
                                    arrow to save the directory for a quickpick later on"
#define BROWSE_TEXT_HELP_CAPTION    "Browse for folder help"

#define BROWSE_TEXT_HELP_TOOLTIP    "Press this to save selected path as a shortcut"
                                    //Must not exceed 79 chars!!! 

Each group is explained below:

Defines Description Default value
Group #1
BROWSE_WIDTH, BROWSE_HEIGHT, BROWSE_LISTVIEWSIZE The WIDTH/HEIGHT is the size of the window. The ListView-size is the percentage of the width of the dirlist. 640, 420, 0.65 (percentage of the width!)
BROWSE_BORDER_VERT, BROWSE_BORDER_HORI The border variables are pixels between controls in vertical and horizontal direction. 4,2
BROWSE_MAXENTRIES MaxEntries is the size of quick picks we can show on the screen (shouldn't be more entries than the screen can show) 20 (should be enough for everybody)
Group #2
BROWSE_MESSAGE Message is the internal message that we use for the controls. It is used increased, so it start on 10101 then 10102 and so on 10101
Group #3
STATIC_HYPERTEXT_WINDOW_CLASS The Hypertext window class is just the internal name of the class handling the hypertext-class. Just change this if you have duplicated names in the project. "STATIC_HYPERTEXT"
Group #4
BROWSE_FONTNAME, BROWSE_FONTSIZE This is the font & size used in the hypertext class. It will not check if the font actually exists, so be sure to enter a valid name. "Verdana", 12
Group #5
BROWSE_SELECTCOLOR, BROWSE_SELECTCOLORHOVER, BROWSE_DIRCOLOR, BROWSE_DIRCOLORHOVER Colors on the hypertext class. Split into the selector and the actually directory. RGB(0,0,255), RGB(50,105,255), RGB(0,0,200), RGB(100,100,250)
Group #6
BROWSE_REGISTRY_ROOT, BROWSE_REGISTRY_PATH The path to where you want the config to be saved. This is usually changed since you don't want the dirbrowser to load variables stored in the same place in different projects where you use this. HKEY_CURRENT_USER, "Software\\DirBrowser" (This should always be changed!)
Group #7
BROWSE_TEXT_SHORTCUTS, BROWSE_TEXT_HELP, BROWSE_TEXT_HELP_CAPTION, BROWSE_TEXT_HELP_TOOLTIP Since I haven't made a "Multilanguage" support in this project, you can change the text used here. "Shortcuts", "Please select a folder in the list and press the arrow to save the directory for a quickpick later on", "Browse for folder help", "Press this to save selected path as a shortcut" (Must not exceed 79 chars)

Points of Interests

I found a little bug while compiling the release version of the project. Take a look at this code:

if(pMe->MessageIsOdd == FALSE)
{
    if(nID % 2 == 0)
        MsgIsOdd = FALSE;
    else
        MsgIsOdd = TRUE;
}
else
{
    if(nID % 2 == 0)
        MsgIsOdd = TRUE;
    else
        MsgIsOdd = FALSE;
}

There shouldn't be any errors in this, but after some research I noticed that the first part of the if-sentence is the only one that gets called. I needed to split it to avoid this bug like this:

if(pMe->MessageIsOdd == FALSE)
{
    //...
}
if(pMe->MessageIsOdd == TRUE)
{
    //...
}

If someone has a good answer to this, please let me know. I'm using Visual Studio 6.0 C++ with SP5 + UINT64 Processor pack Patch.

History

  • v1.0 - Initial release

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Lars [Large] Werner
Engineer
Norway Norway
I'm looking for new opportunities in Norway, contact me on email, twitter or Facebook
Not able to travel (a lot) so either home office or in Telemark area, Norway.
 
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Visit http://lars.werner.no/ for my techno-blog!
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Comments and Discussions

 
QuestionAdding a NEW FOLDER button to the browse window PinmemberWilliamb201218-Sep-12 16:43 
AnswerRe: Adding a NEW FOLDER button to the browse window PinmemberLars [Large] Werner19-Sep-12 0:28 
GeneralNicely Done! PinmemberBassam Abdul-Baki16-Mar-06 7:54 

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