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Form Captions with Unicode characters in VB6

Posted on 2007-10-08
Medium Priority
Last Modified: 2013-12-26
I want to display Unicode characters in a VB6 Form caption.
All attempts with SetWindowsTextW are failing and the string gets converted to ANSI.

Any code snippets available anywhere?

Question by:ToFri
LVL 28

Expert Comment

ID: 20033323

Author Comment

ID: 20035651
Thank you,

Nice, but not really a solution for the problem.
I need to show arbitrary Unicode in the caption under every Windows locale setting.

We have customers all over the world using different Windows XP versions, like Russion, Greek, Hebrew, Arabic and so on. And I just want to call SetWindowTextW.

I know (think I know) this does not work because the VB6 Form is not a Unicode-Window and so a conversion from Unicode to ANSI takes place behind the scenes.
I read somewhere, that one needs to install a hook (CBT?) and send the SetWindowTextW from inside the Hook in order to achieve the desired result&

Some code snippets for that would be very apprechiated.

Thank You anyway

LVL 22

Expert Comment

ID: 20043815
Vb Command button has a hWnd so you can use HCBT_ACTIVATE and SetWindowTextW however Vb Label does not (class is "ThunderFormDC") so you cannot hook it.

Here is a Unilabel control that works but requires that the Unicode caption be set at run-time:


To do this correctly though you need at least the following:
   1. Render Unicode using API DrawTextW
   2. Implement AutoSize using GetTextExtentPoint32W so that it gets correct metrics for Unicode strings.
   3. Vb IDE Properties window does not support Unicode strings. You can cheat by pasting UTF-8 here and converting it inside your control to UTF-16, otherwise to do it right you need a Property Page with a Unicode aware TextBox to input the Unicode caption.
   4. Modify PropertyBag persiststance of caption to use a byte array so that it does not automatically change the caption to ANSI when writing.
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Author Comment

ID: 20044516
Yes Thank you !
I understand this works for controls inside the Form.
My question is regarding the Form Caption!
Not regarding any control inside. We did solve these problems already.
The "only" problem remaining is the Title of the application Window itself.
I mean the text between the Icon of the application and the Minimize, Restore, Close boxes.

Thank you anyway

LVL 22

Accepted Solution

danaseaman earned 1000 total points
ID: 20044765
Sorry I misread your question.
To manipulate the Form Caption aka "TitleBar" for Unicode support here are a couple links to get you started:
1. http://www.vbaccelerator.com/home/vb/code/Libraries/Subclassing/SSubTimer/VB6_Graduated_Title_Bar_Sample.asp
   You need to change from DrawTextA to DrawTextW as well as account for XP Themes.
2. http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=62038&lngWId=1
   This one apperas to be better than "VB6_Graduated_Title_Bar_Sample" and is buried in ThunderVb and can be found at folder "C:\ThunderVB_v_1_0_0_31_7_2005\ThunVBCC\V1\ThunderVB Controls\uniCaption"
   You will probably want to change the subclassing to either Paul Caton (latest version http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=68737&lngWId=1 ) or VbAccelerator( http://www.vbaccelerator.com/home/vb/Code/Libraries/Subclassing/SSubTimer/article.asp ).

Author Comment

ID: 20046551
Thank you very much.
This will help.
I did not think of this obvious way.
Good to have some sourcecode to start with.


Expert Comment

ID: 20228789
Forced accept.

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