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Full Discussion: Wanna learn native GUI programming in UNIX - Linux ?
Top Forums UNIX for Beginners Questions & Answers Wanna learn native GUI programming in UNIX - Linux ? Post 303040558 by Sennenmut on Thursday 31st of October 2019 01:46:10 PM
Old 10-31-2019
GUI Programming. Code works.
Hi ,
wanna learn native GUI programming in Unix-Linux instead of Gtk and Qt.
No problem. You don't need a cross platform Gui toolkit like Gtk and Qt.
And the code and syntax is also not more or less than others.
Check out this code for a simple mainwindow for your application that is openend in the middle of the screen.
Save code as mainwin.c file.
Go in the folder with terminal and compile with the command :
Code:
clang -o newone  mainwin.c  -lXm -lXt -lX11

When it is ready then write in the same folder terminal :
Code:
chmod 777 newone

Start the executable file from normal file browser with a double klick.
You see a main window GUI in the middle of your screen.
Thats it.
All works propertly. Since 30 Years. Only cross compile applications need a different toolkit.
Change the size of the window simple by other dimension data.
Of course you should have installed 'clang' compiler and 'motif' toolkit with your
synaptic package manager programm that is on your UNIX machine.

Code:
 #include <Xm/Form.h>
#include <Xm/Label.h>
#include <Xm/PushB.h>


int main ( int argc, char ** argv )
{
    Widget              shell, form, label, button;
    XtAppContext app;
    int  i;


    shell = XtAppInitialize ( &app, "Formtest", NULL, 0,
                          &argc, argv, NULL, NULL, 0 );

    Screen * s = XtScreen(shell);

    int dw = WidthOfScreen(s);
    int dh = HeightOfScreen( s );

    Dimension px = (dw-500)/2;
    Dimension py = (dh-300)/2;

    XtVaSetValues ( shell,
              XmNwidth, 500,
              XmNheight, 300,
              XmNx, px,
              XmNy, py,
              NULL );


    form = XtCreateManagedWidget ( "form", xmFormWidgetClass,
                                shell, NULL, 0 );

    label = XtVaCreateManagedWidget ( "label", xmLabelWidgetClass,
                                form, NULL, 0 );

    button = XtVaCreateManagedWidget ( "button", xmPushButtonWidgetClass,
                                form,
                                XmNbottomAttachment,       XmATTACH_FORM,
                                 0 );
    XtVaSetValues ( button,
              XmNwidth, 100,
              XmNheight, 50,
              NULL );


    XtRealizeWidget ( shell );
    XtAppMainLoop ( app );

}

Last edited by Sennenmut; 10-31-2019 at 03:44 PM.. Reason: more description
 

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LEARN ABOUT MOJAVE

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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