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PC World Komputer 1998 May
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Borland
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Cplus45
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EXPERT.PAK
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TLISTBOX.OWL
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1995-08-29
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194 lines
<<[H]TListBox [[TListBox]]
##{hheader.snp}
#include <owl\owlpch.h>
#pragma hdrstop
##<<TApplication QUERY_FILENAME_CPP [[Filename]]
#include "[[Filename]].rh" // Definition of all resources.
//{{TListBox = [[TListBox]]}}
class [[TListBox]] : public TListBox {
public:
[[TListBox]] (TWindow* parent, int id, int x, int y, int w, int h, TModule* module = 0);
virtual ~[[TListBox]] ();
##--BEGIN-- @OPT_APPL_PRINTING
//{{[[TListBox]]VIRTUAL_BEGIN}}
public:
virtual void Paint (TDC& dc, bool erase, TRect& rect);
##:DBVirtual(\\"[[TListBox]]", "Paint")
//{{[[TListBox]]VIRTUAL_END}}
//{{[[TListBox]]RSP_TBL_BEGIN}}
protected:
void EvGetMinMaxInfo (MINMAXINFO far& minmaxinfo);
//{{[[TListBox]]RSP_TBL_END}}
DECLARE_RESPONSE_TABLE([[TListBox]]);
##--END-- @OPT_APPL_PRINTING
}; //{{[[TListBox]]}}
##{hfooter.snp}
>>[H]TListBox [[TListBox]]
<<[CPP]TListBox [[TListBox]]
##{cheader.snp}
#include <owl\owlpch.h>
#pragma hdrstop
##<<TApplication QUERY_FILE_H [[FileName]]
#include "[[FileName]]"
##--BEGIN-- !@OPT_APPL_DOCVIEW
## --BEGIN-- @QUERY_APPL_MODEL == VALUE_MDI
##: <<TMDIChild QUERY_WIND_CLIENT [[Client]]
##: <<*Client QUERY_FILE_H [[FileName]]
#include "[[FileName]]"
## --END-- @QUERY_APPL_MODEL == VALUE_MDI
## --BEGIN-- @QUERY_APPL_MODEL == VALUE_SDI
## --END-- @QUERY_APPL_MODEL == VALUE_SDI
##--END-- !@OPT_APPL_DOCVIEW
##QUERY_FILE_H [[FileName]]
#include "[[FileName]]"
#include <stdio.h>
//{{[[TListBox]] Implementation}}
##--BEGIN-- @OPT_APPL_PRINTING
##--BEGIN-- @QUERY_APPL_COMMENT == VALUE_VERBOSE
//
// Build a response table for all messages/commands handled
// by [[TListBox]] derived from TListBox.
//
##--END-- @QUERY_APPL_COMMENT == VALUE_VERBOSE
DEFINE_RESPONSE_TABLE1([[TListBox]], TListBox)
//{{[[TListBox]]RSP_TBL_BEGIN}}
##:DBResponse(\\"[[TListBox]]", "", "", "WM_GETMINMAXINFO", "")
EV_WM_GETMINMAXINFO,
//{{[[TListBox]]RSP_TBL_END}}
END_RESPONSE_TABLE;
##--END-- @OPT_APPL_PRINTING
##--BEGIN-- @QUERY_APPL_COMMENT == VALUE_VERBOSE
//////////////////////////////////////////////////////////
// [[TListBox]]
// ==========
// Construction/Destruction handling.
##--END-- @QUERY_APPL_COMMENT == VALUE_VERBOSE
[[TListBox]]::[[TListBox]] (TWindow* parent, int id, int x, int y, int w, int h, TModule* module)
: TListBox(parent, id, x, y, w, h, module)
{
Attr.Style &= ~LBS_SORT; // Don't sort the list its a file.
##QUERY_WIND_STYLE [[StyleAttributes]]
##StyleAttributes != "" 3
// Override the default window style for TListBox.
[[StyleAttributes]]
##QUERY_WIND_BACKGRND [[BackgroundColor]]
##BackgroundColor != "" 3
// Change the window's background color
SetBkgndColor([[BackgroundColor]]);
// INSERT>> Your constructor code here.
}
[[TListBox]]::~[[TListBox]] ()
{
Destroy();
// INSERT>> Your destructor code here.
}
##--BEGIN-- @OPT_APPL_PRINTING == TRUE
##--BEGIN-- @QUERY_APPL_COMMENT == VALUE_VERBOSE
//
// Paint routine for Window, Printer, and PrintPreview for a TListBox client.
//
##--END-- @QUERY_APPL_COMMENT == VALUE_VERBOSE
void [[TListBox]]::Paint (TDC& dc, bool, TRect& rect)
{
##<<TApplication QUERY_CLASS_NAME [[TApplication]]
[[TApplication]] *theApp = TYPESAFE_DOWNCAST(GetApplication(), [[TApplication]]);
if (theApp) {
##:@QUERY_APPL_COMMENT == VALUE_VERBOSE
// Only paint if we're printing and we have something to paint, otherwise do nothing.
if (theApp->Printing && theApp->Printer && !rect.IsEmpty()) {
##:@QUERY_APPL_COMMENT == VALUE_VERBOSE 2
// Use pageSize to get the size of the window to render into. For a Window it's the client area,
// for a printer it's the printer DC dimensions and for print preview it's the layout window.
TSize pageSize(rect.right - rect.left, rect.bottom - rect.top);
HFONT hFont = (HFONT)GetWindowFont();
TFont font("Arial", -12);
if (hFont == 0)
dc.SelectObject(font);
else
dc.SelectObject(TFont(hFont));
TEXTMETRIC tm;
int fHeight = (dc.GetTextMetrics(tm) == true) ? tm.tmHeight + tm.tmExternalLeading : 10;
##:@QUERY_APPL_COMMENT == VALUE_VERBOSE
// How many lines of this font can we fit on a page.
int linesPerPage = MulDiv(pageSize.cy, 1, fHeight);
if (linesPerPage) {
TPrintDialog::TData &printerData = theApp->Printer->GetSetup();
int maxPg = ((GetCount() / linesPerPage) + 1.0);
##:@QUERY_APPL_COMMENT == VALUE_VERBOSE
// Compute the number of pages to print.
printerData.MinPage = 1;
printerData.MaxPage = maxPg;
##:@QUERY_APPL_COMMENT == VALUE_VERBOSE
// Do the text stuff:
int fromPage = printerData.FromPage == -1 ? 1 : printerData.FromPage;
int toPage = printerData.ToPage == -1 ? 1 : printerData.ToPage;
char buffer[255];
int currentPage = fromPage;
while (currentPage <= toPage) {
int startLine = (currentPage - 1) * linesPerPage;
int lineIdx = 0;
while (lineIdx < linesPerPage) {
##:@QUERY_APPL_COMMENT == VALUE_VERBOSE
// If the string is no longer valid then there's nothing more to display.
if (GetString(buffer, startLine + lineIdx) < 0)
break;
dc.TabbedTextOut(TPoint(0, lineIdx * fHeight), buffer, strlen(buffer), 0, NULL, 0);
lineIdx++;
}
currentPage++;
}
}
}
}
}
void [[TListBox]]::EvGetMinMaxInfo (MINMAXINFO far& minmaxinfo)
{
##<<TApplication QUERY_CLASS_NAME [[TApplication]]
[[TApplication]] *theApp = TYPESAFE_DOWNCAST(GetApplication(), [[TApplication]]);
if (theApp) {
if (theApp->Printing) {
minmaxinfo.ptMaxSize = TPoint(32000, 32000);
minmaxinfo.ptMaxTrackSize = TPoint(32000, 32000);
return;
}
}
TListBox::EvGetMinMaxInfo(minmaxinfo);
}
##--END-- @OPT_APPL_PRINTING == TRUE
>>[CPP]TListBox [[TListBox]]