Lazarus: Program without GUI - Many WSRegister Errors
Question by Guest | Last update on 2022-04-01 | Created on 2014-08-18
At the moment, I am trying to code a program without GUI or Form (Command Line Tool) that should nevertheless be able to use some of the LCL functions.
For this, I have added "LCL" as requirement via menu "Project > Project Inspector > New Requirement" after I have created a "Simple Program" in Lazarus.
Unfortunately, when trying to compile my blank application, I encountered with the following errors:
project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomImageList project1.lpr(11,1) Error: Undefined symbol: WSRegisterMenuItem project1.lpr(11,1) Error: Undefined symbol: WSRegisterMenu project1.lpr(11,1) Error: Undefined symbol: WSRegisterMainMenu project1.lpr(11,1) Error: Undefined symbol: WSRegisterPopupMenu project1.lpr(11,1) Error: Undefined symbol: WSRegisterDragImageList project1.lpr(11,1) Error: Undefined symbol: WSRegisterLazAccessibleObject project1.lpr(11,1) Error: Undefined symbol: WSRegisterControl project1.lpr(11,1) Error: Undefined symbol: WSRegisterWinControl project1.lpr(11,1) Error: Undefined symbol: WSRegisterGraphicControl project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomControl project1.lpr(11,1) Error: Undefined symbol: WSRegisterScrollingWinControl project1.lpr(11,1) Error: Undefined symbol: WSRegisterScrollBox project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomFrame project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomForm project1.lpr(11,1) Error: Undefined symbol: WSRegisterHintWindow project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomScrollBar project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomGroupBox project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomComboBox project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomListBox project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomEdit project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomMemo project1.lpr(11,1) Error: Undefined symbol: WSRegisterButtonControl project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomButton project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomCheckBox project1.lpr(11,1) Error: Undefined symbol: WSRegisterToggleBox project1.lpr(11,1) Error: Undefined symbol: WSRegisterRadioButton project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomStaticText project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomLabel project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomBitBtn project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomSpeedButton project1.lpr(11,1) Error: Undefined symbol: WSRegisterShape project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomSplitter project1.lpr(11,1) Error: Undefined symbol: WSRegisterPaintBox project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomImage project1.lpr(11,1) Error: Undefined symbol: WSRegisterBevel project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomRadioGroup project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomCheckGroup project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomLabeledEdit project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomPanel project1.lpr(11,1) Error: Undefined symbol: WSRegisterCustomTrayIcon project1.lpr(11,1) Error: Undefined symbol: WSRegisterCommonDialog project1.lpr(11,1) Error: Undefined symbol: WSRegisterFileDialog project1.lpr(11,1) Error: Undefined symbol: WSRegisterOpenDialog project1.lpr(11,1) Error: Undefined symbol: WSRegisterSaveDialog project1.lpr(11,1) Error: Undefined symbol: WSRegisterSelectDirectoryDialog project1.lpr(11,1) Error: Undefined symbol: WSRegisterColorDialog project1.lpr(11,1) Error: Undefined symbol: WSRegisterColorButton project1.lpr(11,1) Error: Undefined symbol: WSRegisterFontDialog project1.lpr(11,1) Fatal: There were 49 errors compiling module, stopping
How can I make my program running?
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You have to add "Interfaces" to the USES section of your main program (the unit starting with "program"):
Then it should work (with the LCL included so that the error messages will disappear).
Alternatively, I can recommend to remove the LCL requirement and to take the LCLBase instead. Usually, the LCLBase should contain all things you need for your command line application (file management, LCLIntf, LCLProc etc) but nothing like Forms and Dialogs that you do not need in most cases. With this, you can also radically remove the file size of your program when you do not have this "burden" in your app any more.
Last update on 2022-04-01 | Created on 2014-08-18
Thank you!
I had the same problem and applying what you suggested worked perfectly. I've started using Lazarus several times as an alternative to Delphi, let's see if this time I can get used to it.
2017-03-05 at 14:35
Thank you!
Solved.
2017-10-03 at 05:19
Thank you! Adding Interfaces did the job in the same situation.
This is the first clear answer on this question in Google.
2017-11-01 at 21:53
Faced the same error, got on this forum, "Interfaces" added now after compilation I get an empty command line window, which quickly finishes its work.
2019-02-03 at 21:24
Thank you!
You helped me a lot with this answer!!
It was great!
2022-03-21 at 20:00