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關(guān)于vb.net分辨率適配的信息

在VB.NET中通過那個函數(shù)可以獲取當(dāng)前屏幕的分辨率?

您可以用下面給出這一小段代碼檢測當(dāng)前屏幕分辨率,然后根據(jù)結(jié)果作出反應(yīng)──例如,重新調(diào)整窗體大小以適應(yīng)用程序戶分辨率。

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Public Function CheckRez(pixelWidth As Long, pixelHeight As Long) As Boolean

'

Dim lngTwipsX As Long

Dim lngTwipsY As Long

'

' convert pixels to twips

lngTwipsX = pixelWidth * 15

lngTwipsY = pixelHeight * 15

'

' check against current settings

If lngTwipsX Screen.Width Then

CheckRez = False

Else

If lngTwipsY Screen.Height Then

CheckRez = False

Else

CheckRez = True

End If

End If

'

End Function

Next, run the following code at the start of the program:

If CheckRez(640, 480) = False Then

MsgBox "Incorrect screen size!"

Else

MsgBox "Screen Resolution Matches!"

End If

vb.net 怎樣將窗體和所有控件根據(jù)電腦分辨率固定?

Public?Class?Form1

Dim 初始化控件自動大小調(diào)整與窗口的寬度比例 As Integer

Dim 初始化控件自動大小調(diào)整與窗口的高度比例 As Integer

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

初始化控件自動大小調(diào)整與窗口的寬度比例 = Me.Width / 控件自動大小調(diào)整.Width

初始化控件自動大小調(diào)整與窗口的高度比例 = Me.Height / 控件自動大小調(diào)整.Height

顯示控件的位置坐標(biāo)()

End?Sub

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

' Form1_ResizeEnd? 這個事件是 窗口大小變化完成后 再進(jìn)行操作的

控件自動大小調(diào)整.Location = New Point(控件自動大小調(diào)整.Left, 控件自動大小調(diào)整.Top)

'設(shè)置控件的初始左位置坐標(biāo)? 與? 上位置坐標(biāo)

控件自動大小調(diào)整.Size = New Point(Int(Me.Width / 初始化控件自動大小調(diào)整與窗口的寬度比例), Int(Me.Height / 初始化控件自動大小調(diào)整與窗口的高度比例))

'更改控件的大小? 按第一次窗口的比例 進(jìn)行調(diào)整

顯示控件的位置坐標(biāo)()

End Sub

Private?Sub 顯示控件的位置坐標(biāo)()

Label1.Text = "控件的上邊距坐標(biāo): " 控件自動大小調(diào)整.Top

Label2.Text = "控件的左邊距坐標(biāo): " 控件自動大小調(diào)整.Left

Label3.Text = "控件的寬度大小: " 控件自動大小調(diào)整.Width

Label4.Text = "控件的高度大?。?" 控件自動大小調(diào)整.Height

End Sub

End?Class

VB窗口自適應(yīng)分辨率,并固定在右上角

設(shè)計與分辨率無關(guān)的窗體

缺省情況下,當(dāng)改變屏幕分辨率時,Microsoft Visual Basic 不會改變窗體與控件的尺寸。這就意味著在分辨率為 1024 X 768 的屏幕上設(shè)計的窗體,在分辨率為 640 X 480 的屏幕中運(yùn)行時會伸出屏幕的邊界之外。如果想創(chuàng)建不管使用什么樣的屏幕分辨率都能有相同比例的窗體和控件,必須在最低的分辨率下設(shè)計窗體,或者將改變窗體的代碼添加到程序中去。

避免尺寸問題的最簡單的方法是在 640 X 480 的分辨率下設(shè)計窗體。如果更喜歡在高一些的分辨率下工作,仍需要考慮窗體在低一些的分辨率下將如何顯示。實現(xiàn)這一點(diǎn)的方法是用“Form Layout”窗口預(yù)覽窗體的大小和位置。您也可以使用“Resolution Guides”觀察在低分辨率時屏幕的哪些部分是可見的。要切換到“Resolution Guides”,可以在“Form Layout”窗口單擊鼠標(biāo)右鍵,從彈出菜單上選擇“Resolution Guides”菜單項。

在運(yùn)行時,Visual Basic 根據(jù)設(shè)計時的位置來放置窗體。如果設(shè)計時在 1024 X 768 的分辨率上運(yùn)行,并把窗體放到屏幕的右下角,則當(dāng)它在比較低的分辨率下運(yùn)行時該窗體可能看不見。為了避免這種情況的發(fā)生,在設(shè)計時可從“Form Layout”窗口的彈出菜單選擇“Startup Position”菜單項來設(shè)置窗體的啟動位置。同樣,您也可以在運(yùn)行時用下面的 Form Load 事件中的代碼來設(shè)置窗體的位置:

Private Sub Form_Load()

Me.Move Screen.Width - Width , 0

End Sub

'下面代碼除字體外,基本能自動適應(yīng)不同分辨率了:

Option Explicit

Dim MeWidth As Long

Dim MeHeight As Long

Private Type ctr

Width As Long

Height As Long

Left As Long

Top As Long

End Type

Dim myctr() As ctr

Private Sub Form_Load()

Dim i As Long, kx As Single, ky As Single

MeWidth = Me.ScaleWidth

MeHeight = Me.ScaleHeight

ScaleHeight = 1000 ' 設(shè)置高度的單位值。

ScaleWidth = 1000 ' 設(shè)置寬度的單位值。

ReDim myctr(Controls.Count)

'把每個控件的屬性存入自定義類型數(shù)組

For i = 0 To Controls.Count - 1

myctr(i).Width = Controls(i).Width

myctr(i).Height = Controls(i).Height

myctr(i).Left = Controls(i).Left

myctr(i).Top = Controls(i).Top

Next

kx = Screen.Width / 1024 / 15

ky = Screen.Height / 768 / 15

Width = Width * kx

Height = Height * ky

Move Screen.Width - Width , 0

End Sub

Private Sub Form_Resize()

Dim i As Long

Dim MyControl As Control

ScaleHeight = 1000 ' 設(shè)置高度的單位值。

ScaleWidth = 1000 ' 設(shè)置寬度的單位值。

'把自定義類型數(shù)組存入每個控件的屬性

For i = 0 To Controls.Count - 1

Controls(i).Width = myctr(i).Width

Controls(i).Height = myctr(i).Height

Controls(i).Left = myctr(i).Left

Controls(i).Top = myctr(i).Top

Next

End Sub

'注意代碼中以下2行:

'kx = Screen.Width / 1024 / 15

'ky = Screen.Height / 768 / 15

'其中的1024 和768 表示在窗體設(shè)置時的屏幕分辨率,如在其他分辨率設(shè)置時可取相應(yīng)值

vb.net如何獲取屏幕分辨率從而設(shè)置窗體大小

默認(rèn)單位是像素

96是系統(tǒng)的一種設(shè)定,每英寸的點(diǎn)數(shù),是系統(tǒng)界面用小字體時的設(shè)置

用像素數(shù)除以dpi沒有意義

VB.NET設(shè)置屏幕分辨率、顏色位數(shù)、刷新率 實例代碼

這篇文章介紹了VB.NET設(shè)置屏幕分辨率、顏色位數(shù)、刷新率

實例代碼,有需要的朋友可以參考一下

復(fù)制代碼

代碼如下:

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

"錯誤!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

vb.net保存圖片時如何調(diào)整其分辨率

保存前加一句 myImage2.SetResolution(300, 300) 你設(shè)置的bMape不是保存的主畫布 所以無效,設(shè)置分辨率就是 SetResolution(X,Y)


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