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adding_20an_20up-down_20control_20to_20the_20main_20window
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adding_20an_20up-down_20control_20to_20the_20main_20window [2018/03/31 13:19] 127.0.0.1 external edit |
adding_20an_20up-down_20control_20to_20the_20main_20window [2018/04/17 14:56] tbest3112 Added syntax highlighting |
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| //by Richard Russell, May 2006//\\ \\ The BB4W help documentation describes how to add an **up-down control** to a dialogue box [[http://www.bbcbasic.co.uk/bbcwin/manual/bbcwing.html#updown|here]] but doesn't tell you how to add one to the main output window.\\ \\ The code below illustrates the creation of an up-down control which is 'attached' to an edit box, which is the usual way in which one is used. First install the necessary library:\\ \\ | //by Richard Russell, May 2006//\\ \\ The BB4W help documentation describes how to add an **up-down control** to a dialogue box [[http://www.bbcbasic.co.uk/bbcwin/manual/bbcwing.html#updown|here]] but doesn't tell you how to add one to the main output window.\\ \\ The code below illustrates the creation of an up-down control which is 'attached' to an edit box, which is the usual way in which one is used. First install the necessary library:\\ \\ | ||
| + | <code bb4w> | ||
| INSTALL @lib$+"WINLIB5" | INSTALL @lib$+"WINLIB5" | ||
| + | </code> | ||
| Next create the edit box to which the up-down control will be attached:\\ \\ | Next create the edit box to which the up-down control will be attached:\\ \\ | ||
| + | <code bb4w> | ||
| WS_BORDER = &800000 | WS_BORDER = &800000 | ||
| ES_NUMBER = &2000 | ES_NUMBER = &2000 | ||
| hedit% = FN_editbox("", 50, 50, 80, 20, 0, WS_BORDER + ES_NUMBER) | hedit% = FN_editbox("", 50, 50, 80, 20, 0, WS_BORDER + ES_NUMBER) | ||
| + | </code> | ||
| Here the edit box is positioned at **50,50** and has a size of **80x20** pixels. The style value specifies that the box has a border and that it is a numeric-entry box.\\ \\ Now we can create the up-down control itself:\\ \\ | Here the edit box is positioned at **50,50** and has a size of **80x20** pixels. The style value specifies that the box has a border and that it is a numeric-entry box.\\ \\ Now we can create the up-down control itself:\\ \\ | ||
| + | <code bb4w> | ||
| UDS_SETBUDDYINT = 2 | UDS_SETBUDDYINT = 2 | ||
| UDS_ALIGNRIGHT = 4 | UDS_ALIGNRIGHT = 4 | ||
| hupdown% = FN_createwindow("msctls_updown32", "", 0, 0, 0, 0, 0, \ | hupdown% = FN_createwindow("msctls_updown32", "", 0, 0, 0, 0, 0, \ | ||
| \ UDS_ALIGNRIGHT + UDS_SETBUDDYINT, 0) | \ UDS_ALIGNRIGHT + UDS_SETBUDDYINT, 0) | ||
| + | </code> | ||
| The style value specifies that the up-down control is right-aligned in the edit box and that the edit box value is automatically modified by the up-down control.\\ \\ We must tell the up-down control to which edit box it is attached, over what range of values it operates, and what the initial value is:\\ \\ | The style value specifies that the up-down control is right-aligned in the edit box and that the edit box value is automatically modified by the up-down control.\\ \\ We must tell the up-down control to which edit box it is attached, over what range of values it operates, and what the initial value is:\\ \\ | ||
| + | <code bb4w> | ||
| UDM_SETBUDDY = &469 | UDM_SETBUDDY = &469 | ||
| UDM_SETRANGE = &465 | UDM_SETRANGE = &465 | ||
| Line 19: | Line 26: | ||
| SYS "SendMessage", hupdown%, UDM_SETRANGE, 0, 50 | SYS "SendMessage", hupdown%, UDM_SETRANGE, 0, 50 | ||
| SYS "SendMessage", hupdown%, UDM_SETPOS, 0, 20 | SYS "SendMessage", hupdown%, UDM_SETPOS, 0, 20 | ||
| + | </code> | ||
| Now we can access the contents of the edit box in the usual way, as documented [[http://www.bbcbasic.co.uk/bbcwin/manual/bbcwing.html#fneditbox|here]].\\ \\ Don't forget to delete both the edit box and the up-down control when you are finished:\\ \\ | Now we can access the contents of the edit box in the usual way, as documented [[http://www.bbcbasic.co.uk/bbcwin/manual/bbcwing.html#fneditbox|here]].\\ \\ Don't forget to delete both the edit box and the up-down control when you are finished:\\ \\ | ||
| + | <code bb4w> | ||
| PROC_closewindow(hupdown%) | PROC_closewindow(hupdown%) | ||
| PROC_closewindow(hedit%) | PROC_closewindow(hedit%) | ||
| + | </code> | ||
adding_20an_20up-down_20control_20to_20the_20main_20window.txt ยท Last modified: 2018/04/17 14:56 by tbest3112
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