editcontrol

Edit control not repainted entirely with chosen brush

由 Deadly 提交于 2019-12-12 18:27:22
问题 I have an edit control which background color depends from validity of user input. If input is valid edit control should keep default look, else the background color should change to light gray. I am checking validity in EN_UPDATE handler and if it is invalid I store the HWND of the edit control into vector . Visual Styles are enabled. The problem comes when I change the position of the mouse pointer. Let me describe it: I click on edit control and type invalid input. I move mouse pointer

Edit control doesn't generate WM_COMMAND messages

由 旧巷老猫 提交于 2019-12-12 02:28:44
问题 I have an edit control. In the parent window I'm listening a WM_COMMAND message. But my control doesn't send it on change. Moreover, when I'm watching messages with Spy I can see only different keyboard messages on the edit control itself and the only message in the main parent window is WM_CTLCOLOREDIT . P.S.: The only interesting thing I'm doing - I'm creating an edit with HWND_MESSAGE parent and assign a parent later with SetParent(); 回答1: For an edit control, notifications are sent to the

EditingControlShowing events firing multiple times

由 元气小坏坏 提交于 2019-12-11 07:38:47
问题 I have a DGV in VB.Net 2008 connected to an Access DB table. The DGV is not Read Only, but is full of read-only columns except for one, which contains a combo box. The combo box allows the user to select an outcome for that particular row, and then the program copies in a pre calculated value into the "Profit" column depending upon the item selected in the combobox. Then the user hits the Save button and the DB updates (currently via SQL methods in the XSD). Easy enough so far. Here is the

Advice required to insert one string into another once obtaining text from clipboard

由 谁都会走 提交于 2019-12-06 00:03:30
INTRODUCTION AND RELEVANT INFORMATION: I have an edit control that needs to accept only signed decimal numbers ( something like -12.35 ). I have decided to implement this via subclassing . The WM_CHAR handler seems to works well, and I need to handle several other messages to completely protect user from entering invalid text. One such message is WM_PASTE . So far I was able to properly get the text from the clipboard and to discard or pass the message depending if the copied string is indeed decimal number. Edit control has limited input to 12 characters. This is done via EM_SETLIMITTEXT

Is it possible to determine if the text in a dbEdit is longer than what is visible?

由 我只是一个虾纸丫 提交于 2019-12-03 13:39:25
On some forms I have dbEdits that sometimes aren't wide enough to show all the text their fields may contain. For them I have the following code: procedure Tgm12edLots.dbeLotNameMouseEnter(Sender: TObject); begin with dbeLotName do begin ShowHint := True; Hint := Text; end; end; I'd like to avoid the hint showing if all the text is visible, but I don't how to test for that condition. Thanks for any tips/suggestions! I think this should work... function CanShowAllText(Edit: TDBEdit):Boolean; var TextWidth:Integer; VisibleWidth: Integer; Bitmap: TBitmap; const //This could be worked out but

Edit control doesn't generate WM_COMMAND messages

由 ≯℡__Kan透↙ 提交于 2019-12-02 06:10:47
问题 I have an edit control. In the parent window I'm listening a WM_COMMAND message. But my control doesn't send it on change. Moreover, when I'm watching messages with Spy I can see only different keyboard messages on the edit control itself and the only message in the main parent window is WM_CTLCOLOREDIT . P.S.: The only interesting thing I'm doing - I'm creating an edit with HWND_MESSAGE parent and assign a parent later with SetParent(); 回答1: For an edit control, notifications are sent to the

Edit control doesn't generate WM_COMMAND messages

由 巧了我就是萌 提交于 2019-12-02 00:23:48
I have an edit control. In the parent window I'm listening a WM_COMMAND message. But my control doesn't send it on change. Moreover, when I'm watching messages with Spy I can see only different keyboard messages on the edit control itself and the only message in the main parent window is WM_CTLCOLOREDIT . P.S.: The only interesting thing I'm doing - I'm creating an edit with HWND_MESSAGE parent and assign a parent later with SetParent(); David Heffernan For an edit control, notifications are sent to the original parent of the control. That is, in your case, the message only window. In a

Delphi XE8: TEdit TextHint Disappears When Receiving Focus

由 一世执手 提交于 2019-12-01 05:56:38
Basically, I want the TextHint of my TEdits to disappear when the first character is entered and not when they receive focus, like the Edits on this Microsoft page: Sign in to your Microsoft account . Can someone please walk me through on how to achieve this? Thank you in advance. Based on Uwe Raabe's answer, here is a procedure (for Delphi 2007, should work for newer versions of Delphi as well): type TCueBannerHideEnum = (cbhHideOnFocus, cbhHideOnText); procedure TEdit_SetCueBanner(_ed: TEdit; const _s: WideString; _WhenToHide: TCueBannerHideEnum = cbhHideOnFocus); const EM_SETCUEBANNER =

Delphi XE8: TEdit TextHint Disappears When Receiving Focus

由 不羁岁月 提交于 2019-12-01 04:38:49
问题 Basically, I want the TextHint of my TEdits to disappear when the first character is entered and not when they receive focus, like the Edits on this Microsoft page: Sign in to your Microsoft account. Can someone please walk me through on how to achieve this? Thank you in advance. 回答1: Based on Uwe Raabe's answer, here is a procedure (for Delphi 2007, should work for newer versions of Delphi as well): type TCueBannerHideEnum = (cbhHideOnFocus, cbhHideOnText); procedure TEdit_SetCueBanner(_ed:
订阅 editcontrol