vb.net改分辨率 c#修改分辨率

vb.net保存图片时如何调整其分辨率

保存前加一句 myImage2.SetResolution(300, 300) 你设置的bMape不是保存的主画布 所以无效，设置分辨率就是 SetResolution（X,Y）

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vb.net如何获取屏幕分辨率从而设置窗体大小

默认单位是像素

96是系统的一种设定，每英寸的点数，是系统界面用小字体时的设置

用像素数除以dpi没有意义

vb.net 怎样将窗体和所有控件根据电脑分辨率固定？

Public Class Form1

Dim 初始化控件自动大小调整与窗口的宽度比例 As Integer

Dim 初始化控件自动大小调整与窗口的高度比例 As Integer

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

初始化控件自动大小调整与窗口的宽度比例 = Me.Width / 控件自动大小调整.Width

初始化控件自动大小调整与窗口的高度比例 = Me.Height / 控件自动大小调整.Height

显示控件的位置坐标()

End Sub

Private Sub Form1_ResizeEnd(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.ResizeEnd

' Form1_ResizeEnd  这个事件是 窗口大小变化完成后 再进行操作的

控件自动大小调整.Location = New Point(控件自动大小调整.Left, 控件自动大小调整.Top)

'设置控件的初始左位置坐标  与  上位置坐标

控件自动大小调整.Size = New Point(Int(Me.Width / 初始化控件自动大小调整与窗口的宽度比例), Int(Me.Height / 初始化控件自动大小调整与窗口的高度比例))

'更改控件的大小  按第一次窗口的比例 进行调整

显示控件的位置坐标()

End Sub

Private Sub 显示控件的位置坐标()

Label1.Text = "控件的上边距坐标： " 控件自动大小调整.Top

Label2.Text = "控件的左边距坐标： " 控件自动大小调整.Left

Label3.Text = "控件的宽度大小： " 控件自动大小调整.Width

Label4.Text = "控件的高度大小： " 控件自动大小调整.Height

End Sub

End Class

VB.NET设置屏幕分辨率、颜色位数、刷新率 实例代码

这篇文章介绍了VB.NET设置屏幕分辨率、颜色位数、刷新率

实例代码，有需要的朋友可以参考一下

复制代码

代码如下:

Private

Declare

Function

GetDeviceCaps

Lib

"gdi32"

(ByVal

hdc

As

Long,

ByVal

nIndex

As

Long)

As

Long

Private

Declare

Function

ChangeDisplaySettings

Lib

"user32"

Alias

"ChangeDisplaySettingsA"

(lpDevMode

As

Any,

ByVal

dwflags

As

Long)

As

Long

Private

Const

CCDEVICENAME

As

Long

=

32

Private

Const

CCFORMNAME

As

Long

=

32

Private

Const

DM_BITSPERPEL

As

Long

=

H40000

Private

Const

DM_PELSWIDTH

As

Long

=

H80000

Private

Const

DM_PELSHEIGHT

As

Long

=

H100000

Private

Const

DM_DISPLAYFLAGS

As

Long

=

H200000

Private

Const

DM_DISPLAYFREQUENCY

=

H400000

Private

Const

CDS_FORCE

As

Long

=

H80000000

Private

Const

BITSPIXEL

As

Long

=

12

Private

Const

HORZRES

As

Long

=

8

Private

Const

VERTRES

As

Long

=

10

Private

Const

VREFRESH

=

116

Private

Type

DEVMODE

dmDeviceName

As

String

*

CCDEVICENAME

dmSpecVersion

As

Integer

dmDriverVersion

As

Integer

dmSize

As

Integer

dmDriverExtra

As

Integer

dmFields

As

Long

dmOrientation

As

Integer

dmPaperSize

As

Integer

dmPaperLength

As

Integer

dmPaperWidth

As

Integer

dmScale

As

Integer

dmCopies

As

Integer

dmDefaultSource

As

Integer

dmPrintQuality

As

Integer

dmColor

As

Integer

dmDuplex

As

Integer

dmYResolution

As

Integer

dmTTOption

As

Integer

dmCollate

As

Integer

dmFormName

As

String

*

CCFORMNAME

dmUnusedPadding

As

Integer

dmBitsPerPel

As

Integer

dmPelsWidth

As

Long

dmPelsHeight

As

Long

dmDisplayFlags

As

Long

dmDisplayFrequency

As

Long

End

Type

Private

Sub

cmdChangeDesktopMode_Click()

Dim

DM

As

DEVMODE

With

DM

.dmPelsWidth

=

CInt(txtNewWidth.Text)

.dmPelsHeight

=

CInt(txtNewHeight.Text)

.dmBitsPerPel

=

CInt(txtNewColor.Text)

.dmDisplayFrequency

=

CInt(txtNewFreq.Text)

.dmFields

=

DM_PELSWIDTH

Or

DM_PELSHEIGHT

Or

DM_BITSPERPEL

Or

DM_DISPLAYFREQUENCY

.dmSize

=

LenB(DM)

End

With

If

ChangeDisplaySettings(DM,

CDS_FORCE)

Then

MsgBox

"错误!不支持此模式！"

End

If

End

Sub

Private

Sub

Form_Load()

txtOldWidth.Text

=

GetDeviceCaps(Me.hdc,

HORZRES)

txtOldHeight.Text

=

GetDeviceCaps(Me.hdc,

VERTRES)

txtOldColor.Text

=

GetDeviceCaps(Me.hdc,

BITSPIXEL)

txtOldFreq.Text

=

GetDeviceCaps(Me.hdc,

VREFRESH)

End

Sub