What shall I do to handle dual monitor issue in my delphi application. Using api or application implement in .NET C# code

Question

I want to create a api which can keep track of my delphi application's forms in dual monitor if form open on second monitor then next form should be there. this track will be done my api in c# windows app. please guid

Description:

I have an delphi application. when u used dual monitor then following issue occurred. let see scenario:

there are three from 1, 2 ,3 from 2 will open after clicking on button on from 1 and from 3 will open after clicking on button on from 2. all works fine when monitor is single. Now when i connect second monitor then form 1 will open by default on primary monitor which is first monitor, when i moved form 1 from monitor 1 to monitor 2 and click on button of form 2 to open form 3 then it is opening on monitor 1 instead of monitor 2. it should be open on monitor 2 means on monitor where last open form located. I am not able to implement it in my delphi code. So i thought to make one api in c# which will do this work of tracking window for my delphi application.

Why in the world would you think you need to use C# for this instead of just handling it in your own Delphi code? — Ken White, Apr 03 '17 at 12:39

score 0 · Answer 1 · answered Apr 03 '17 at 11:36

0

You do not need C# to do this, it can be done with Delphi. The following code can be added to each forms OnCreate or OnShow event:

var
 m: TMonitor;
 cp: TPoint;
begin
  // Get the Cursor Position
  GetCursorPos(cp);
  // Get the Monitor the Cursor is on
  m := Screen.MonitorFromPoint(cp);
  // Position the Form on the correct Monitor, about the center
  Self.Top  := ((Screen.Monitors[m.MonitorNum].Height - 30) div 2) - (Self.Height div 2);
  Self.Left := (Screen.Monitors[m.MonitorNum].Width div 2) - (Self.Width div 2) + m.Left;

answered Apr 03 '17 at 11:36

TDC

377
1
6

undeclared identifier : MonitorFromPoint ,this error comes. I am using delphi 5. – user7424581 Apr 03 '17 at 12:45
Sorry, it looks like that may have been added in Delphi 6 or 7. – TDC Apr 03 '17 at 13:29
@user7424581 Then write your own multi monitor code using the API. https://msdn.microsoft.com/en-us/library/windows/desktop/dd145062(v=vs.85).aspx – David Heffernan Apr 03 '17 at 13:58
@ user7424581 It seems strange: you use Delphi 5 from year 1999, but consider to implement something in .NET C#, which has very first version from year 2002... Why do you keep with such an old version of Delphi? ;) Do you know anyone coding for .NET 1.0 from 2002 nowadays? – zdzichs Apr 03 '17 at 15:12
yes sir it's strange. but my company worked on it. and i have to fixed it on same version. that's why i am asking for code example in c# so i can use it as api or dll to handle monitor – user7424581 Apr 04 '17 at 06:13
@DavidHeffernan how to do this can you please give example? – user7424581 Apr 04 '17 at 12:13
Why not make some effort yourself? – David Heffernan Apr 04 '17 at 12:14
@DavidHeffernan sir i search regarding this but can't able to implement the code. I am very new in delphi, please give me example so that i can try on it. – user7424581 Apr 05 '17 at 15:07
Never mind, I'm not going to write your program for you. – David Heffernan Apr 05 '17 at 15:15
@DavidHeffernan, ok sir. Thank you for guidance. – user7424581 Apr 06 '17 at 09:12
please any one who may help in this problem. – user7424581 Apr 06 '17 at 09:14

What shall I do to handle dual monitor issue in my delphi application. Using api or application implement in .NET C# code

1 Answers1