wxgrid selection problem -- bug?
in [wxWindows]
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From: Klaas Hartmann on 10 Jul 2007 23:13 Hi there, I am having problems GetSelected* on a wxGrid. I first noticed my problem in wxPerl and thought it might be the wxPerl interface, however the samples/grid example appears to have the same problem. The environment: Kubuntu 7.04 wxGTK-2.8.4 (built from scratch not package) gcc version 4.1.2 (Ubuntu 4.1.2-0ubuntu4) The behaviour I expect: Suppose I have selected some cells in a wxGrid. * In wxPerl calling any of the GetSelected* functions on that object should return the selected cells. * In the wxWidgets samples/grid the menu option "Select->Show Current Selection" should show the selected cells in the text box at the bottom What I get: * In wxPerl nothing is returned from any of the functions * In samples/grid I get "0 cells selected:" (or rows/columns if that selection mode is used). Am I expecting the wrong behaviour (seems unlikely given the samples/grid example)? Or is my wxWidgets broken? Or is there a problem with wxGrid? Thanks for your help! Klaas --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
From: Klaas Hartmann on 11 Jul 2007 00:01 Hello again, I found some further information in bug reports 1443956 and 1217401. It turns out you get different behaviour depending whether cells where selected by clicking row/col labels or the cells. Below is a summary with behaviour by selection mode. In summary: * I could not find a scenario where GetSelectedCells produced any output. * When wxGridSelectRows/Cols is being used clicking on a cell in a row/col produces the same behaviour (from a user's perspective) as does clicking on the row/col label. Hence I expected that GetSelectedRows/Cols should also behave in the same way. Any thoughts on why this is implemented as it is? This implementation makes it complicated/impossible? to get the selected cells by any means other than events. Thanks again! Klaas SelectionMode: wxGridSelectCells ------------------------------------------- SELECT BY: CELLS ROW LABELS COL LABELS wxGrid::GetSelectedCells x x x wxGrid::GetSelectedCols x x y wxGrid::GetSelectedRows x y x SelectionMode: wxGridSelectRows ------------------------------------------- SELECT BY: CELLS ROW LABELS COL LABELS wxGrid::GetSelectedCells x x NA wxGrid::GetSelectedCols x x NA wxGrid::GetSelectedRows x y NA SelectionMode: wxGridSelectCols ------------------------------------------- SELECT BY: CELLS ROW LABELS COL LABELS wxGrid::GetSelectedCells x NA x wxGrid::GetSelectedCols x NA y wxGrid::GetSelectedRows x NA x On Wed, 11 Jul 2007 15:13:58 Klaas Hartmann wrote: > Hi there, > > I am having problems GetSelected* on a wxGrid. I first noticed my problem > in wxPerl and thought it might be the wxPerl interface, however the > samples/grid example appears to have the same problem. > > The environment: > Kubuntu 7.04 > wxGTK-2.8.4 (built from scratch not package) > gcc version 4.1.2 (Ubuntu 4.1.2-0ubuntu4) > > The behaviour I expect: > Suppose I have selected some cells in a wxGrid. > * In wxPerl calling any of the GetSelected* functions on that object should > return the selected cells. > * In the wxWidgets samples/grid the menu option "Select->Show Current > Selection" should show the selected cells in the text box at the bottom > > What I get: > * In wxPerl nothing is returned from any of the functions > * In samples/grid I get "0 cells selected:" (or rows/columns if that > selection mode is used). > > Am I expecting the wrong behaviour (seems unlikely given the samples/grid > example)? Or is my wxWidgets broken? Or is there a problem with wxGrid? > > Thanks for your help! > > Klaas > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
From: "John Labenski" on 11 Jul 2007 01:58 Try wxGrid::GetSelectionBlockTopLeft and wxGrid::GetSelectionBlockBottomRight. See : http://www.wxwidgets.org/manuals/stable/wx_wxgrid.html#wxgridgetselectedcells This is not a bug, the selection tries to minimize the amount of data it has to store. Regards, John Labenski On 7/11/07, Klaas Hartmann <k.hartmann(a)math.canterbury.ac.nz> wrote: > Hello again, > > I found some further information in bug reports 1443956 and 1217401. It turns > out you get different behaviour depending whether cells where selected by > clicking row/col labels or the cells. Below is a summary with behaviour by > selection mode. > > In summary: > * I could not find a scenario where GetSelectedCells produced any output. > * When wxGridSelectRows/Cols is being used clicking on a cell in a row/col > produces the same behaviour (from a user's perspective) as does clicking on > the row/col label. Hence I expected that GetSelectedRows/Cols should also > behave in the same way. > > Any thoughts on why this is implemented as it is? This implementation makes it > complicated/impossible? to get the selected cells by any means other than > events. > > Thanks again! > Klaas > > > SelectionMode: wxGridSelectCells > ------------------------------------------- > SELECT BY: CELLS ROW LABELS COL LABELS > wxGrid::GetSelectedCells x x x > wxGrid::GetSelectedCols x x y > wxGrid::GetSelectedRows x y x > > SelectionMode: wxGridSelectRows > ------------------------------------------- > SELECT BY: CELLS ROW LABELS COL LABELS > wxGrid::GetSelectedCells x x NA > wxGrid::GetSelectedCols x x NA > wxGrid::GetSelectedRows x y NA > > SelectionMode: wxGridSelectCols > ------------------------------------------- > SELECT BY: CELLS ROW LABELS COL LABELS > wxGrid::GetSelectedCells x NA x > wxGrid::GetSelectedCols x NA y > wxGrid::GetSelectedRows x NA x > > > > > On Wed, 11 Jul 2007 15:13:58 Klaas Hartmann wrote: > > Hi there, > > > > I am having problems GetSelected* on a wxGrid. I first noticed my problem > > in wxPerl and thought it might be the wxPerl interface, however the > > samples/grid example appears to have the same problem. > > > > The environment: > > Kubuntu 7.04 > > wxGTK-2.8.4 (built from scratch not package) > > gcc version 4.1.2 (Ubuntu 4.1.2-0ubuntu4) > > > > The behaviour I expect: > > Suppose I have selected some cells in a wxGrid. > > * In wxPerl calling any of the GetSelected* functions on that object should > > return the selected cells. > > * In the wxWidgets samples/grid the menu option "Select->Show Current > > Selection" should show the selected cells in the text box at the bottom > > > > What I get: > > * In wxPerl nothing is returned from any of the functions > > * In samples/grid I get "0 cells selected:" (or rows/columns if that > > selection mode is used). > > > > Am I expecting the wrong behaviour (seems unlikely given the samples/grid > > example)? Or is my wxWidgets broken? Or is there a problem with wxGrid? > > > > Thanks for your help! > > > > Klaas > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
From: Klaas Hartmann on 11 Jul 2007 03:51
Hi John, Okay after examining the source I get it now: - GetSelectionBlock* is used for blocks that are selected (by dragging or clicking a cell in wxGridSelectRows/wxGridSelectCols selection mode). - GetSelectedCells works on individual cells selected (while holding ctrl) - GetSelectedRows/Cols works on rows/columns selected by clicking the labels in wxGridSelectRows/wxGridSelectCols selection mode). This way there is no overlap between the selections returned using these functions... I still think it might be useful to have GetSelectedRows/Cols return the selection if a cell is clicked in wxGridSelectRows/wxGridSelectCols selection mode -- you are selecting a row/column after all. Lastly, I think better documentation might be useful, particularly with respect to the selection mode. Even after your email I still needed to examine the source code to fully understand how this works.... Also it might be useful if the grid sample displayed the output from all the GetSelected* options when you use the "Show current Selection" menu option. This would have explained things nicely. Best wishes, Klaas On Wed, 11 Jul 2007 17:58:54 John Labenski wrote: > Try wxGrid::GetSelectionBlockTopLeft and > wxGrid::GetSelectionBlockBottomRight. > > See : > http://www.wxwidgets.org/manuals/stable/wx_wxgrid.html#wxgridgetselectedcel >ls > > This is not a bug, the selection tries to minimize the amount of data > it has to store. > > Regards, > John Labenski > > On 7/11/07, Klaas Hartmann <k.hartmann(a)math.canterbury.ac.nz> wrote: > > Hello again, > > > > I found some further information in bug reports 1443956 and 1217401. It > > turns out you get different behaviour depending whether cells where > > selected by clicking row/col labels or the cells. Below is a summary with > > behaviour by selection mode. > > > > In summary: > > * I could not find a scenario where GetSelectedCells produced any output. > > * When wxGridSelectRows/Cols is being used clicking on a cell in a > > row/col produces the same behaviour (from a user's perspective) as does > > clicking on the row/col label. Hence I expected that GetSelectedRows/Cols > > should also behave in the same way. > > > > Any thoughts on why this is implemented as it is? This implementation > > makes it complicated/impossible? to get the selected cells by any means > > other than events. > > > > Thanks again! > > Klaas > > > > > > SelectionMode: wxGridSelectCells > > ------------------------------------------- > > SELECT BY: CELLS ROW LABELS > > COL LABELS wxGrid::GetSelectedCells x x > > x wxGrid::GetSelectedCols x x > > y wxGrid::GetSelectedRows x y > > x > > > > SelectionMode: wxGridSelectRows > > ------------------------------------------- > > SELECT BY: CELLS ROW LABELS > > COL LABELS wxGrid::GetSelectedCells x x > > NA wxGrid::GetSelectedCols x x > > NA wxGrid::GetSelectedRows x y > > NA > > > > SelectionMode: wxGridSelectCols > > ------------------------------------------- > > SELECT BY: CELLS ROW LABELS > > COL LABELS wxGrid::GetSelectedCells x NA > > x wxGrid::GetSelectedCols x NA > > y wxGrid::GetSelectedRows x NA > > x > > > > On Wed, 11 Jul 2007 15:13:58 Klaas Hartmann wrote: > > > Hi there, > > > > > > I am having problems GetSelected* on a wxGrid. I first noticed my > > > problem in wxPerl and thought it might be the wxPerl interface, however > > > the samples/grid example appears to have the same problem. > > > > > > The environment: > > > Kubuntu 7.04 > > > wxGTK-2.8.4 (built from scratch not package) > > > gcc version 4.1.2 (Ubuntu 4.1.2-0ubuntu4) > > > > > > The behaviour I expect: > > > Suppose I have selected some cells in a wxGrid. > > > * In wxPerl calling any of the GetSelected* functions on that object > > > should return the selected cells. > > > * In the wxWidgets samples/grid the menu option "Select->Show Current > > > Selection" should show the selected cells in the text box at the bottom > > > > > > What I get: > > > * In wxPerl nothing is returned from any of the functions > > > * In samples/grid I get "0 cells selected:" (or rows/columns if that > > > selection mode is used). > > > > > > Am I expecting the wrong behaviour (seems unlikely given the > > > samples/grid example)? Or is my wxWidgets broken? Or is there a problem > > > with wxGrid? > > > > > > Thanks for your help! > > > > > > Klaas > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > > > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org > > --------------------------------------------------------------------- > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org --------------------------------------------------------------------- To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org |