View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0037894 | Lazarus CCR | Widgetset | public | 2020-10-09 06:18 | 2021-01-24 09:54 |
| Reporter | David | Assigned To | |||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | Linux | OS | U18.04 (Qt5.9) | ||
| Summary | 0037894: RichMemo method GetStyleRange fails on Qt5 | ||||
| Description | Under Qt5 the GetStyleRange method determines that every single char is a style 'block'. In qt5richmemo.pas, 0000260 class function TQtWSCustomRichMemo.GetStyleRange() appears to be missing a line, one that populates the rng array. The code uses an undocumented function QTextBlock_textFormatsCount(), implemented as cpp code in libQt5Pas and right next to that function is QTextBlock_textFormatsRanges() that looks like its associated and does in fact populate an array with appropriate data. So, still guessing, I added a line using that latter function and GetStyleRange now works as expected. Patch enclosed. | ||||
| Tags | No tags attached. | ||||
| Widgetset | QT5 | ||||
| Attached Files |
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RM_Qt5_GetStyleRange.patch (514 bytes)
--- qt5/qt5richmemo.pas 2020-10-09 14:30:38.748966866 +1100
+++ new/qt5richmemo.pas 2020-10-09 14:57:43.447733669 +1100
@@ -296,6 +296,8 @@
cnt := QTextBlock_textFormatsCount(qblck);
SetLength(rng, cnt);
if cnt>0 then begin
+ // populate rng with start and length data, implemented in libQt5Pas
+ QTextBlock_textFormatsRanges(qblck, PTextRangeArray(rng), cnt); // DRB
blckofs := QTextBlock_position(qblck);
textStart := textStart - blckofs;
for i:=0 to cnt-1 do begin
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