Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls
Kevin, Excellent work! Thank you very much for your efforts on this. I'm going to test it out this week. If everyone is interested, I'll let everyone know how it goes. Reini, Also, excellent work. The unfortunate thing is that your patch is for 1.04. Most people are using 1.06 these days. I found a patch for 1.05 but again that's still not 1.06. Do you have a patch for 1.06? Regards, Joshua New On Sat, August 28, 2010 7:17 am, Reini Urban wrote: 2010/8/28 Kevin Marshall kejoh...@hotmail.com: After much experimentation, I have finally succeeded in creating an owner-drawn control in Win32::GUI. I decided to create this post detailing how to create an owner-drawn control in case someone else has the need to use one. I posted a fullfletched patch for the simplier CustomDraw, which I'm using for years to do the same. I primarily use it to color list items. Added http://www.mail-archive.com/perl-win32-gui-hack...@lists.sourceforge.net/m sg00624.html and removed, promised for 1.04, but it didn't happen. http://www.mail-archive.com/perl-win32-gui-hack...@lists.sourceforge.net/ msg00628.html -- Reini Urban http://phpwiki.org/ http://murbreak.at/ - - Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d ___ Perl-Win32-GUI-Users mailing list Perl-Win32-GUI-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perl-win32-gui-users http://perl-win32-gui.sourceforge.net/ -- Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev ___ Perl-Win32-GUI-Users mailing list Perl-Win32-GUI-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perl-win32-gui-users http://perl-win32-gui.sourceforge.net/
Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls
Reini, The thing is that Custom Draw is supported by a different set of controls to Owner Draw, so I suppose a combination of both could be used. Kevin. 2010/8/28 Kevin Marshallkejoh...@hotmail.com: After much experimentation, I have finally succeeded in creating an owner-drawn control in Win32::GUI. I decided to create this post detailing how to create an owner-drawn control in case someone else has the need to use one. I posted a fullfletched patch for the simplier CustomDraw, which I'm using for years to do the same. I primarily use it to color list items. Added http://www.mail-archive.com/perl-win32-gui-hack...@lists.sourceforge.net/msg00624.html and removed, promised for 1.04, but it didn't happen. http://www.mail-archive.com/perl-win32-gui-hack...@lists.sourceforge.net/msg00628.html -- Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d ___ Perl-Win32-GUI-Users mailing list Perl-Win32-GUI-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perl-win32-gui-users http://perl-win32-gui.sourceforge.net/
Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls
Octavian, According to the Windows docs, the common controls are automatically accessible, which are what Win32::GUI uses, whereas custom controls require additional setup. Kevin. Hi Kevin, I was asking this because all the standard controls which can be created with Win32::GUI are accessible without doing anything special. Octavian - Original Message - From: Kevin Marshallkejoh...@hotmail.com To: Octavian Rasnitaorasn...@gmail.com Cc:perl-win32-gui-users@lists.sourceforge.net Sent: Saturday, August 28, 2010 1:56 PM Subject: Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls Hi Octavian, Thanks for your comments. It's good to know that you find it useful. I have been looking into Windows Accessibility to see how it works, and it seems that under normal circumstances (i.e. creating GUIs using C++, rather than Perl), the custom controls must provide an interface to the Accessibility API, which accessibility programs can use to interact with the control. Unfortunately, it looks like it is probably beyond the scope of the Win32::GUI module. Perhaps it is something that could be looked into for a separate module. Other people may have thoughts on the topic. Thanks again, Kevin. Hi Kevin, Congratulations for the program! I have tested it with a screen reader and it works. I added the -dialogui = 1 option to the $winMain object to be able to use the keyboard for changing the focus. The only problem, which is an important one, is that if I arrow up or down in the list box, the screen reader announces just things like item 1 of 8, item 2 of 8 and so on, without telling the label of the current item as it should. Do you (or somebody else) have any idea how to add accessibility features (MSAA) to this custom control in order to be as useful as a standard control? Basicly it should also report the labels of the list box items and not just print them. Thank you. Octavian - Original Message - From: Kevin Marshallkejoh...@hotmail.com To:perl-win32-gui-users@lists.sourceforge.net Sent: Saturday, August 28, 2010 8:07 AM Subject: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls Hi everyone, After much experimentation, I have finally succeeded in creating an owner-drawn control in Win32::GUI. I decided to create this post detailing how to create an owner-drawn control in case someone else has the need to use one. For those of you who don't know, an owner-drawn control allows the user more control over the appearance of the control. This usually involves responding to messages sent whenever the control needs to be drawn and drawing the control in anyway that you wish. In order to get my sample to work you will need to install the PeekPoke module from CPAN. This module allows reading and writing of data to and from arbitrary memory locations. This is needed to set the height of the items of the listbox. More on this below. This example was created using ActiveState Perl v5.12.0 running on Windows XP. For this example, I will demonstrate how to create an owner-drawn listbox. The listbox will have items with a larger height, will display two lines of text with different formats, and an image. All of the files related to this example at the bottom of this post. Anyway, on with the example. I decided to store the information about each listbox item in an external XML file and use XML::Simple to parse it. This makes it rather simple to change the information for the listbox items. I also created 8 simple 40x40 bitmaps that will be displayed in each listbox item. Now for a description of the code. The first step is to create a window for our listbox and load our XML data from the file using XML::Simple::XMLin(). This is all fairly simple, so I won't bother explaining. Next step is to create a hook for the WM_MEASUREITEM message. This message is sent when the listbox is created so the user can specify the width and height of the listbox items. The $lParam variable contains the address of the structure that is passed to the message, which needs to be filled out. Here we use the poke() function to write the desired height into the structure, which in our case is 50. 16 is the offset of the itemHeight member of the structure which needs to contain the height that we want when the message returns. Next a hook is created for the WM_DRAWITEM message. This message is sent whenever an item in the listbox requires drawing. First step is to unpack the structure that is passed to the message. If the itemID contains -1, then the listbox is empty, so we simply return from the sub if this occurs. Otherwise, it contains the zero-based index of the item being drawn. The itemAction member contains the action required for the drawing. Here we respond if the entire item needs drawing. To begin with we draw the bitmap for the item. First we create a compatible DC
Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls
Hi Kevin, Congratulations for the program! I have tested it with a screen reader and it works. I added the -dialogui = 1 option to the $winMain object to be able to use the keyboard for changing the focus. The only problem, which is an important one, is that if I arrow up or down in the list box, the screen reader announces just things like item 1 of 8, item 2 of 8 and so on, without telling the label of the current item as it should. Do you (or somebody else) have any idea how to add accessibility features (MSAA) to this custom control in order to be as useful as a standard control? Basicly it should also report the labels of the list box items and not just print them. Thank you. Octavian - Original Message - From: Kevin Marshall kejoh...@hotmail.com To: perl-win32-gui-users@lists.sourceforge.net Sent: Saturday, August 28, 2010 8:07 AM Subject: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls Hi everyone, After much experimentation, I have finally succeeded in creating an owner-drawn control in Win32::GUI. I decided to create this post detailing how to create an owner-drawn control in case someone else has the need to use one. For those of you who don't know, an owner-drawn control allows the user more control over the appearance of the control. This usually involves responding to messages sent whenever the control needs to be drawn and drawing the control in anyway that you wish. In order to get my sample to work you will need to install the PeekPoke module from CPAN. This module allows reading and writing of data to and from arbitrary memory locations. This is needed to set the height of the items of the listbox. More on this below. This example was created using ActiveState Perl v5.12.0 running on Windows XP. For this example, I will demonstrate how to create an owner-drawn listbox. The listbox will have items with a larger height, will display two lines of text with different formats, and an image. All of the files related to this example at the bottom of this post. Anyway, on with the example. I decided to store the information about each listbox item in an external XML file and use XML::Simple to parse it. This makes it rather simple to change the information for the listbox items. I also created 8 simple 40x40 bitmaps that will be displayed in each listbox item. Now for a description of the code. The first step is to create a window for our listbox and load our XML data from the file using XML::Simple::XMLin(). This is all fairly simple, so I won't bother explaining. Next step is to create a hook for the WM_MEASUREITEM message. This message is sent when the listbox is created so the user can specify the width and height of the listbox items. The $lParam variable contains the address of the structure that is passed to the message, which needs to be filled out. Here we use the poke() function to write the desired height into the structure, which in our case is 50. 16 is the offset of the itemHeight member of the structure which needs to contain the height that we want when the message returns. Next a hook is created for the WM_DRAWITEM message. This message is sent whenever an item in the listbox requires drawing. First step is to unpack the structure that is passed to the message. If the itemID contains -1, then the listbox is empty, so we simply return from the sub if this occurs. Otherwise, it contains the zero-based index of the item being drawn. The itemAction member contains the action required for the drawing. Here we respond if the entire item needs drawing. To begin with we draw the bitmap for the item. First we create a compatible DC from the DC that is passed to the message, then select the bitmap for the current item into it. Then we BitBlt() the contents of the compatible DC into the item DC. Next we need to draw the text that will be displayed in the item. We create a large font that will be used for the item's heading, and select the font into the item DC, remembering the old font. Then we draw the text into the item DC using DrawText(). Next we select the old font, and draw the other text that will be displayed in the item. That completes the drawing for the item, so we return from our sub. Next step is to create our listbox. The only difference here from creating an ordinary listbox is to specify the LBS_OWNERDRAWFIXED style. This specifies that the listbox will be owner-drawn, and all the items have the same height. An alternative would be to use the LBS_OWNERDRAWVARIABLE style instead, which specifies that each item will have a different height. In this case, the WM_MEASUREITEM would be sent for each item when the control is created, not just once like our case. Next we loop through each item returned from the XML file, create a Win32::GUI::Bitmap from the file name specified in the file, and add the relevant
Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls
Hi Octavian, Thanks for your comments. It's good to know that you find it useful. I have been looking into Windows Accessibility to see how it works, and it seems that under normal circumstances (i.e. creating GUIs using C++, rather than Perl), the custom controls must provide an interface to the Accessibility API, which accessibility programs can use to interact with the control. Unfortunately, it looks like it is probably beyond the scope of the Win32::GUI module. Perhaps it is something that could be looked into for a separate module. Other people may have thoughts on the topic. Thanks again, Kevin. Hi Kevin, Congratulations for the program! I have tested it with a screen reader and it works. I added the -dialogui = 1 option to the $winMain object to be able to use the keyboard for changing the focus. The only problem, which is an important one, is that if I arrow up or down in the list box, the screen reader announces just things like item 1 of 8, item 2 of 8 and so on, without telling the label of the current item as it should. Do you (or somebody else) have any idea how to add accessibility features (MSAA) to this custom control in order to be as useful as a standard control? Basicly it should also report the labels of the list box items and not just print them. Thank you. Octavian - Original Message - From: Kevin Marshallkejoh...@hotmail.com To:perl-win32-gui-users@lists.sourceforge.net Sent: Saturday, August 28, 2010 8:07 AM Subject: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls Hi everyone, After much experimentation, I have finally succeeded in creating an owner-drawn control in Win32::GUI. I decided to create this post detailing how to create an owner-drawn control in case someone else has the need to use one. For those of you who don't know, an owner-drawn control allows the user more control over the appearance of the control. This usually involves responding to messages sent whenever the control needs to be drawn and drawing the control in anyway that you wish. In order to get my sample to work you will need to install the PeekPoke module from CPAN. This module allows reading and writing of data to and from arbitrary memory locations. This is needed to set the height of the items of the listbox. More on this below. This example was created using ActiveState Perl v5.12.0 running on Windows XP. For this example, I will demonstrate how to create an owner-drawn listbox. The listbox will have items with a larger height, will display two lines of text with different formats, and an image. All of the files related to this example at the bottom of this post. Anyway, on with the example. I decided to store the information about each listbox item in an external XML file and use XML::Simple to parse it. This makes it rather simple to change the information for the listbox items. I also created 8 simple 40x40 bitmaps that will be displayed in each listbox item. Now for a description of the code. The first step is to create a window for our listbox and load our XML data from the file using XML::Simple::XMLin(). This is all fairly simple, so I won't bother explaining. Next step is to create a hook for the WM_MEASUREITEM message. This message is sent when the listbox is created so the user can specify the width and height of the listbox items. The $lParam variable contains the address of the structure that is passed to the message, which needs to be filled out. Here we use the poke() function to write the desired height into the structure, which in our case is 50. 16 is the offset of the itemHeight member of the structure which needs to contain the height that we want when the message returns. Next a hook is created for the WM_DRAWITEM message. This message is sent whenever an item in the listbox requires drawing. First step is to unpack the structure that is passed to the message. If the itemID contains -1, then the listbox is empty, so we simply return from the sub if this occurs. Otherwise, it contains the zero-based index of the item being drawn. The itemAction member contains the action required for the drawing. Here we respond if the entire item needs drawing. To begin with we draw the bitmap for the item. First we create a compatible DC from the DC that is passed to the message, then select the bitmap for the current item into it. Then we BitBlt() the contents of the compatible DC into the item DC. Next we need to draw the text that will be displayed in the item. We create a large font that will be used for the item's heading, and select the font into the item DC, remembering the old font. Then we draw the text into the item DC using DrawText(). Next we select the old font, and draw the other text that will be displayed in the item. That completes the drawing for the item, so we return from our sub. Next step is to create our listbox. The only difference here from
Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls
Hi Kevin, I was asking this because all the standard controls which can be created with Win32::GUI are accessible without doing anything special. Octavian - Original Message - From: Kevin Marshall kejoh...@hotmail.com To: Octavian Rasnita orasn...@gmail.com Cc: perl-win32-gui-users@lists.sourceforge.net Sent: Saturday, August 28, 2010 1:56 PM Subject: Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls Hi Octavian, Thanks for your comments. It's good to know that you find it useful. I have been looking into Windows Accessibility to see how it works, and it seems that under normal circumstances (i.e. creating GUIs using C++, rather than Perl), the custom controls must provide an interface to the Accessibility API, which accessibility programs can use to interact with the control. Unfortunately, it looks like it is probably beyond the scope of the Win32::GUI module. Perhaps it is something that could be looked into for a separate module. Other people may have thoughts on the topic. Thanks again, Kevin. Hi Kevin, Congratulations for the program! I have tested it with a screen reader and it works. I added the -dialogui = 1 option to the $winMain object to be able to use the keyboard for changing the focus. The only problem, which is an important one, is that if I arrow up or down in the list box, the screen reader announces just things like item 1 of 8, item 2 of 8 and so on, without telling the label of the current item as it should. Do you (or somebody else) have any idea how to add accessibility features (MSAA) to this custom control in order to be as useful as a standard control? Basicly it should also report the labels of the list box items and not just print them. Thank you. Octavian - Original Message - From: Kevin Marshallkejoh...@hotmail.com To:perl-win32-gui-users@lists.sourceforge.net Sent: Saturday, August 28, 2010 8:07 AM Subject: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls Hi everyone, After much experimentation, I have finally succeeded in creating an owner-drawn control in Win32::GUI. I decided to create this post detailing how to create an owner-drawn control in case someone else has the need to use one. For those of you who don't know, an owner-drawn control allows the user more control over the appearance of the control. This usually involves responding to messages sent whenever the control needs to be drawn and drawing the control in anyway that you wish. In order to get my sample to work you will need to install the PeekPoke module from CPAN. This module allows reading and writing of data to and from arbitrary memory locations. This is needed to set the height of the items of the listbox. More on this below. This example was created using ActiveState Perl v5.12.0 running on Windows XP. For this example, I will demonstrate how to create an owner-drawn listbox. The listbox will have items with a larger height, will display two lines of text with different formats, and an image. All of the files related to this example at the bottom of this post. Anyway, on with the example. I decided to store the information about each listbox item in an external XML file and use XML::Simple to parse it. This makes it rather simple to change the information for the listbox items. I also created 8 simple 40x40 bitmaps that will be displayed in each listbox item. Now for a description of the code. The first step is to create a window for our listbox and load our XML data from the file using XML::Simple::XMLin(). This is all fairly simple, so I won't bother explaining. Next step is to create a hook for the WM_MEASUREITEM message. This message is sent when the listbox is created so the user can specify the width and height of the listbox items. The $lParam variable contains the address of the structure that is passed to the message, which needs to be filled out. Here we use the poke() function to write the desired height into the structure, which in our case is 50. 16 is the offset of the itemHeight member of the structure which needs to contain the height that we want when the message returns. Next a hook is created for the WM_DRAWITEM message. This message is sent whenever an item in the listbox requires drawing. First step is to unpack the structure that is passed to the message. If the itemID contains -1, then the listbox is empty, so we simply return from the sub if this occurs. Otherwise, it contains the zero-based index of the item being drawn. The itemAction member contains the action required for the drawing. Here we respond if the entire item needs drawing. To begin with we draw the bitmap for the item. First we create a compatible DC from the DC that is passed to the message, then select the bitmap for the current item into it. Then we BitBlt() the contents of the compatible DC into the item DC. Next we need to draw the text
Re: [perl-win32-gui-users] Win32::GUI Owner Drawn Controls
2010/8/28 Kevin Marshall kejoh...@hotmail.com: After much experimentation, I have finally succeeded in creating an owner-drawn control in Win32::GUI. I decided to create this post detailing how to create an owner-drawn control in case someone else has the need to use one. I posted a fullfletched patch for the simplier CustomDraw, which I'm using for years to do the same. I primarily use it to color list items. Added http://www.mail-archive.com/perl-win32-gui-hack...@lists.sourceforge.net/msg00624.html and removed, promised for 1.04, but it didn't happen. http://www.mail-archive.com/perl-win32-gui-hack...@lists.sourceforge.net/msg00628.html -- Reini Urban http://phpwiki.org/ http://murbreak.at/ -- Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d ___ Perl-Win32-GUI-Users mailing list Perl-Win32-GUI-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perl-win32-gui-users http://perl-win32-gui.sourceforge.net/
