Based in this my working code, now i need of a ScrollBox component and a Image component inside he. Eg:
The problem now is the ScrollBox. The MDIChild Form always stays behind, you can test, changing ScrollBox Align (None/Client) property.
Then what is need to MDIChild Form stay above of ScrollBox?
The MDI client window that hosts the MDI child forms is the bottom most window of the MDIForm's content. You can't make MDI child forms appear on top of anything else, because literally everything else placed on the MDIForm is on top of the MDI client window and thus on top of the child forms.
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I have the MDI form with MDI child forms.
As you know, MDI from create scrollbar when child form is beyond the area automatically.
I'd like to use this scrollbar when i do mouse wheel.
I have a parent and child form in Delphi. Parent form contains a TControlBar and on the top of ControlBar there are two Toolbars.
On one of the toolbars there is a button which is used to open the child form.
When child form is displayed, top partion of the form goes below the control bar and top portion of the child form goes hidden below the parent form.
I think the problem is that my child form is using full part of the parent form as the display area.
To my knowledge, I think child form should use ClientWidth and ClientHeight as the display area.
ClientWidth and Clientheight is automatically set.
I want child form to use the remaining area (other then toolbar) for display purpose.
MDI child windows are children of the MDI client window, that's the window that you refer to as the 'remaining area'. Hence they cannot go above any other window parented by the form, like controlbars, toolbars, panels etc.. Additionally, MDI child windows are not constraint with the size of this MDI client window, you can think of the MDI client as an auto-scroll window. Child windows can be moved to overrun any of the edges and a scroll bar will appear to make it possible to restore a full view on them.
If I understand correctly what you want to do, you have to maximize the child windows. You can set the WindowState property of child windows to wsMaximized to that effect.
Is it possible to create an MDI application using FireMonkey in a traditional sense of many documents forms/frames and one master form?
I'm specifically interested since there are no MDI controls on forms anymore.. Has it been replaced with something different?
EDIT: Adding to the question, when I create child forms they all showed separately in taskbar, even the OpenDialogs..
Here's one approach you can use:
1) Create your individual forms as normal, except use a TLayout, call it "LayoutMain", (aligned alClient) as the parent of all controls on that form.
2) On your "master form", when you want to bring a form instance in to behave as it would as an MDI interface, create a TLayout (call it "FormContainer" or something), place as a child of that (aligned to top) another TLayout (call it "FormHeader"), containing the individual controls for the Form Caption, the Minimize/Maximize/Close buttons and anything else you'd like on the "frame" heading. This is called a Composite.
3) Create an instance of your child form (but don't show it), then parent that instance's primary TLayout "LayoutMain" to your main form's TLayout "FormContainer".
4) On the TLayout previously mentioned (with the name "FormHeader"), give it OnMouseDown and OnMouseMove events to provide the ability to drag it around the Master Form.
When you want to maximize the child form inside the master form, you'd just set the outer TLayout "FormContainer" align property to alClient, remembering to store its original Top, Left, Width and Height values within the the form's instance so you can recall them when pressing the Restore button.
True, this is a fairly involved solution, but to the very best of my knowledge this is the only way you're going to achieve what you're trying to do with FireMonkey as it exists today (circa Update 2).
I wouldn't expect Embarcadero to provide any form of MDI emulation as part of FireMonkey "out of the box", as MDI is considered an old-fashioned approach.
The more modern solution would be to use Docking, as the RAD Studio IDE itself does. This provides the very best of both worlds, giving the user the freedom to choose what child forms they want to link into the master form, or display outside of that on their own (or any combination of docked arrangements).
I have inherited an application that was started as an MDI program, but the necessary background work was never put in place to fully support MDI. I'm trying to build in just enough MDI support to make the application look good and work properly as an SDI application.
Here's what I am observing, and I don't know how this is happening or how to fix it.
The MDIchild form's border is shown above the MDIparent form's menu strip.
The MDIchild form has two icons in the upper left.
The MDIchild form has two ControlBoxes in the upper right.
Any ideas why this would be?
I'd be really happy if the MDIChild window border (including the icons and control boxes) was removed entirely.
Thanks,
SH
I created the child form but showed it in normal state instead of maximized. It's as if showing the parent form in the same process as the maximized child form caused the form to be constructed out of order. My code looked something like this...
frmChild.WindowState = FormWindowState.Normal
frmParent.Show() 'frmChild.Show called within form_load of parent
frmChild.WindowState = FormWindowState.Maximized
And yes, I set the Child window's FormBorderStyle to None, but like I said, I didn't want an MDI application.
I think this must be a bug in Visual Studio. For so many people to have difficulty with it, it can't be right.
I found:
Call Show() on your MDI form before setting the WindowState property on your child form to get rid of the multiple control boxes.
Do not set the WindowState to Maximized in the designer -- do it in code after you've shown the parent.
hi
I have a form in which i placed another form as MDI ,on moving the MDI form (Top,Bottom,Left,Right)it goes inside the boundaries of main form so the Mdi gets hidden.
i want to restrict the MDI form to move when it touches the form boundaries.
You need to capture the OnMove event for your child forms, and in that handler you need to make sure your child form's window rect is within the parent's boundary. If not you need to adjust the location of the child form.
An example of how to do this can be found here.