form load and Resize event
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I have a Resize method that I want called only when the user changes the size of the form. But when I Load that form for the first time I notice that the resize event gets called. Is there some way to prevent this?
I think you can change the behaviour by overriding CreateParams or setting the ControlStyles :) top secret xacc-ide 0.0.1
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I think you can change the behaviour by overriding CreateParams or setting the ControlStyles :) top secret xacc-ide 0.0.1
I think you're thinking about repainting automatically when the form resizes. There's nothing in
CreateParamsproperty (it's actually the protected propertyControl.ResizeRedrawyou're thinking about in this case) orControlStylesenumeration that controls that.Microsoft MVP, Visual C# My Articles
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I have a Resize method that I want called only when the user changes the size of the form. But when I Load that form for the first time I notice that the resize event gets called. Is there some way to prevent this?
It is being resized when the form loads. It starts out as a zero-width and zero-height window and then is drawn in the appropriate dimensions, hence the resize. The solution is simple: use a state variable (recommend private accessibility). It's initially unset (false, for example) and the
OnLoadoverride will set it (true, for example). TheOnResizehandler (btw - don't handle events from a base class in a derivative class: it's inefficient and gives you less control) will check this state variable. If it's unset, don't callbase.OnResize(which will fire theResizeevent) and don't call your code that you would normally when a form resizes.Microsoft MVP, Visual C# My Articles
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I think you're thinking about repainting automatically when the form resizes. There's nothing in
CreateParamsproperty (it's actually the protected propertyControl.ResizeRedrawyou're thinking about in this case) orControlStylesenumeration that controls that.Microsoft MVP, Visual C# My Articles
public enum ControlStyles
{
// Fields
AllPaintingInWmPaint = 8192,
CacheText = 16384,
ContainerControl = 1,
DoubleBuffer = 65536,
EnableNotifyMessage = 32768,
**FixedHeight = 64,
FixedWidth = 32,**Opaque = 4,
ResizeRedraw = 16,
Selectable = 512,
StandardClick = 256,
StandardDoubleClick = 4096,
SupportsTransparentBackColor = 2048,
UserMouse = 1024,
UserPaint = 2}
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public enum ControlStyles
{
// Fields
AllPaintingInWmPaint = 8192,
CacheText = 16384,
ContainerControl = 1,
DoubleBuffer = 65536,
EnableNotifyMessage = 32768,
**FixedHeight = 64,
FixedWidth = 32,**Opaque = 4,
ResizeRedraw = 16,
Selectable = 512,
StandardClick = 256,
StandardDoubleClick = 4096,
SupportsTransparentBackColor = 2048,
UserMouse = 1024,
UserPaint = 2}
He doesn't want a fixed-width form, merely to not be notified initially of the resize when the form is loading. You did, however, remind me that it was
ControlStyles.ResizeRedrawand theControl.ResizeRedrawproperty that did match-up, though. I knew there was a pairing there somewhere, just didn't remember off the top of my head.Microsoft MVP, Visual C# My Articles