lboxmult.c File Reference

#include "precomp.h"

Go to the source code of this file.

Functions
void	LBCalcItemRowsAndColumns (PLBIV plb)
void	xxxLBoxCtlHScrollMultiColumn (PLBIV plb, INT cmd, INT xAmt)

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Function Documentation

void LBCalcItemRowsAndColumns (  PLBIV  plb  )

Definition at line 25 of file lboxmult.c. References _GetClientRect(), tagLBIV::cItemFullMax, tagLBIV::cxColumn, tagLBIV::cyChar, INT, tagLBIV::itemsPerColumn, tagLBIV::iTop, max, tagLBIV::numberOfColumns, tagLBIV::spwnd, and xxxNewITop(). Referenced by LBGetSetItemHeightHandler(), ListBoxWndProcWorker(), xxxLBSetFont(), and xxxLBSize(). { RECT rc; _GetClientRect(plb->spwnd, &rc); // // B#4155 // We need to check if plb->cyChar has been initialized. This is because // we remove WS_BORDER from old listboxes and add on WS_EX_CLIENTEDGE. // Since listboxes are always inflated by CXBORDER and CYBORDER, a // listbox that was created empty always ends up 2 x 2. Since this isn't // big enough to fit the entire client border, we don't mark it as // present. Thus the client isn't empty in VER40, although it was in // VER31 and before. It is possible to get to this spot without // plb->cyChar having been initialized yet if the listbox is // multicolumn && ownerdraw variable. // if (rc.bottom && rc.right && plb->cyChar) { /* * Only make these calculations if the width & height are positive */ plb->itemsPerColumn = (INT)max(rc.bottom / plb->cyChar, 1); plb->numberOfColumns = (INT)max(rc.right / plb->cxColumn, 1); plb->cItemFullMax = plb->itemsPerColumn * plb->numberOfColumns; /* * Adjust iTop so it's at the top of a column */ xxxNewITop(plb, plb->iTop); } }

void xxxLBoxCtlHScrollMultiColumn (  PLBIV  plb, INT  cmd, INT  xAmt )

Definition at line 71 of file lboxmult.c. References CheckLock, tagLBIV::cMac, tagLBIV::fRightAlign, tagLBIV::fSmoothScroll, INT, tagLBIV::itemsPerColumn, tagLBIV::iTop, tagLBIV::numberOfColumns, tagLBIV::spwnd, TRUE, xxxLBShowHideScrollBars(), and xxxNewITop(). Referenced by ListBoxWndProcWorker(), xxxLBoxCtlHScroll(), and xxxTrackMouse(). { INT iTop = plb->iTop; CheckLock(plb->spwnd); if (!plb->cMac) return; switch (cmd) { case SB_LINEUP: if (plb->fRightAlign) goto ReallyLineDown; ReallyLineUp: iTop -= plb->itemsPerColumn; break; case SB_LINEDOWN: if (plb->fRightAlign) goto ReallyLineUp; ReallyLineDown: iTop += plb->itemsPerColumn; break; case SB_PAGEUP: if (plb->fRightAlign) goto ReallyPageDown; ReallyPageUp: iTop -= plb->itemsPerColumn * plb->numberOfColumns; break; case SB_PAGEDOWN: if (plb->fRightAlign) goto ReallyPageUp; ReallyPageDown: iTop += plb->itemsPerColumn * plb->numberOfColumns; break; case SB_THUMBTRACK: case SB_THUMBPOSITION: if (plb->fRightAlign) { int iCols = plb->cMac ? ((plb->cMac-1) / plb->itemsPerColumn) + 1 : 0; xAmt = iCols - (xAmt + plb->numberOfColumns); if (xAmt<0) xAmt=0; } iTop = xAmt * plb->itemsPerColumn; break; case SB_TOP: if (plb->fRightAlign) goto ReallyBottom; ReallyTop: iTop = 0; break; case SB_BOTTOM: if (plb->fRightAlign) goto ReallyTop; ReallyBottom: iTop = plb->cMac - 1 - ((plb->cMac - 1) % plb->itemsPerColumn); break; case SB_ENDSCROLL: plb->fSmoothScroll = TRUE; xxxLBShowHideScrollBars(plb); break; } xxxNewITop(plb, iTop); }

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