1.如何在MDK下建立stm32工程
2.VB 关于系统托盘显示数字

如何在MDK下建立stm32工程

       1.解压stmfx_stdperiph_lib.zip 可以从ST官方网站免费下载。

       2.创建一个Demo文件夹

        2.1 新建子文件夹User，用于存放用户源程序

        2.2 新建子文件夹Project，用户KEIL工程文件

        2.3 在Project下依次创建Obj和List子文件夹，存放编译过程中产生的中间文件。

       3. 复制源代码到Demo文件夹

        3.1 将stmfx_stdperiph_lib\STMFx_StdPeriph_Lib_V3.1.2Libraries文件整体复制到Demo文件夹下。这就是ST的标准库，是以源代码形式提供的。

        3.2 将库中的演示代码IOToggle中的文件复制到Demo\User文件夹.

       4. 新建一个Keil MDK工程

        4.1 启动Keil MDK，点击菜单 New uVision Project，然后按向导进行操作

        4.2 选择CPU类型为 STMFZE （这是安富莱STM开发板采用CPU类型）

        4.3 当提示是否复制启动代码时，请选择否。（我们用最新的库中的启动代码，不用Keil软件自带的旧版本启动文件）

        4.4 根据自己的需要修改Target名字。（名字任意）

        4.5 为了便于代码管理，在这个Project下创建几个Group (名字可以任意)

        User : 存放用户自己写的源代码

        RVMDK : 存放启动文件（汇编文件）

        StdPeriph_Driver : 存放ST标准库文件

        CMSIS : 存放CMSIS接口文件（这也是库的一部分）

        4.6 创建好Group后，我们开始依次添加文件。

       5. 修改源代码。我们将修改main.c 文件，换成我们自己跑马灯程序。

       6. 配置工程, 点击“Options”按钮

        6.1 切换到Output。

        选择Object文件夹。

        在Create Hex File 前打钩。

        6.2 切换带Listing。

        选择Listings文件夹

        6.3 切换到C/C++

        添加两个预编译宏 STMFX_HD, USE_STDPERIPH_DRIVER （这是ST库用到了这两个宏）

        修改Includes路径

        6.4 切换到Debug

        选择硬件调试器（缺省是软件仿真），我们选择Cortex-M3 J-Link调试器

        再 Run to main前打钩

        6.4 切换到Utilities

        选额调试器类型，我们选择Cortex-M3 J-Link

        点settings按钮，添加Flash编程算法，我们选择STM高密度器件，Flash容量K字节

       7. 配置工程完毕。下面开始编译。

       8. 编译OK，开始调试。

       9. 教程结束。

       å·²ç»è®²å¾—很清楚了吧，如果还有什么疑问可以再问我或者联系我。

VB 关于系统托盘显示数字

       把数字0-9做成.

       0-9的直接显,或用拉伸(难看点)

       >的用隐藏的控件拼合所需再另存成图(抓图代码)调用.

       一个导向,明白了就行

       select Case的确是不够意思......:)

       ------------------------------------

       -3-3

       合成嘛,还是不给代码:P

       你会在image中画东西吧?在界面上输出文字做个什么定位的没问题吧?,让他们重叠没问题吧? 屏幕截图会不会?(CaptureWindow函数以及CreateBitmapPicture函数,ExtractIcon函数).

       ----------------------

       下面转一段截图文章

       ---------------------

       大家知道在VB下利用API函数Bitblt可以将屏幕或者窗口上的图象拷贝到VB中的PictureBox对象中,但是如果简单的利用PictureBox的SavePicture函数来保存图象，会发现什么也保存不了。这篇文章就是介绍如何捕获并利用Windows下的OLE API函数保存图象。

        首先来看源程序，安化小程序源码首先建立一个新的工程文件，然后在Form1中加入5个CommandButton对象和一个PictureBox对象，解忧影视源码然后在Form1中加入以下代码：

       Option Explicit

       Option Base 0

       Private Type PALETTEENTRY

        peRed As Byte

        peGreen As Byte

        peBlue As Byte

        peFlags As Byte

       End Type

       Private Type LOGPALETTE

        palVersion As Integer

        palNumEntries As Integer

        palPalEntry() As PALETTEENTRY

       End Type

       Private Type GUID

        Data1 As Long

        Data2 As Integer

        Data3 As Integer

        Data4(7) As Byte

       End Type

       Private Const RASTERCAPS As Long =

       Private Const RC_PALETTE As Long = &H

       Private Const SIZEPALETTE As Long =

       Private Type RECT

        Left As Long

        Top As Long

        Right As Long

        Bottom As Long

       End Type

       Private Declare Function CreateCompatibleDC Lib "GDI" (ByVal hDC As Long) As Long

       Private Declare Function CreateCompatibleBitmap Lib "GDI" (ByVal hDC As Long, _

        ByVal nWidth As Long, ByVal nHeight As Long) As Long

       Private Declare Function GetDeviceCaps Lib "GDI" (ByVal hDC As Long, ByVal _

        iCapabilitiy As Long) As Long

       Private Declare Function GetSystemPaletteEntries Lib "GDI" (ByVal hDC As Long, _

        ByVal wStartIndex As Long, ByVal wNumEntries As Long, lpPaletteEntries _

        As PALETTEENTRY) As Long

       Private Declare Function CreatePalette Lib "GDI" (lpLogPalette As LOGPALETTE) _

        As Long

       Private Declare Function SelectObject Lib "GDI" (ByVal hDC As Long, ByVal hObject _

        As Long) As Long

       Private Declare Function BitBlt Lib "GDI" (ByVal hDCDest As Long, ByVal XDest As _

        Long, ByVal YDest As Long, ByVal nWidth As Long, ByVal nHeight As Long, _

        ByVal hDCSrc As Long, ByVal XSrc As Long, ByVal YSrc As Long, ByVal dwRop _

        As Long) As Long

       Private Declare Function DeleteDC Lib "GDI" (ByVal hDC As Long) As Long

       Private Declare Function GetForegroundWindow Lib "USER" () As Long

       Private Declare Function SelectPalette Lib "GDI" (ByVal hDC As Long, ByVal hPalette _

        As Long, ByVal bForceBackground As Long) As Long

       Private Declare Function RealizePalette Lib "GDI" (ByVal hDC As Long) As Long

       Private Declare Function GetWindowDC Lib "USER" (ByVal hWnd As Long) As Long

       Private Declare Function GetDC Lib "USER" (ByVal hWnd As Long) As Long

       Private Declare Function GetWindowRect Lib "USER" (ByVal hWnd As Long, lpRect As _

        RECT) As Long

       Private Declare Function ReleaseDC Lib "USER" (ByVal hWnd As Long, ByVal hDC As _

        Long) As Long

       Private Declare Function GetDesktopWindow Lib "USER" () As Long

       Private Type PicBmp

        Size As Long

        Type As Long

        hBmp As Long

        hPal As Long

        Reserved As Long

       End Type

       Private Declare Function OleCreatePictureIndirect Lib "olepro.dll" (PicDesc As _

        PicBmp, RefIID As GUID, ByVal fPictureOwnsHandle As Long, IPic As IPicture) As Long

       '捕捉整个屏幕

       Private Sub Command1_Click()

        Set Picture1.Picture = CaptureScreen()

       End Sub

       '在两秒钟后捕捉当前的活动窗口

       Private Sub Command2_Click()

        MsgBox "当你关闭这个对话框两秒钟之后程序会捕捉处于活动状态的窗口."

        '等待两秒钟

        Dim EndTime As Date

        EndTime = DateAdd("s", 2, Now)

        Do Until Now > EndTime

        DoEvents

        Loop

        Set Picture1.Picture = CaptureActiveWindow()

        Me.SetFocus

       End Sub

       Private Sub Command3_Click()

        Set Picture1.Picture = Nothing

       End Sub

       Public Function CreateBitmapPicture(ByVal hBmp As Long, ByVal hPal As Long) As Picture

        Dim r As Long

        Dim Pic As PicBmp

        Dim IPic As IPicture

        Dim IID_IDispatch As GUID

        '填充IDispatch界面

        With IID_IDispatch

        .Data1 = &H

        .Data4(0) = &HC0

        .Data4(7) = &H

        End With

        '填充Pic

        With Pic

        .Size = Len(Pic) ' Pic结构长度

        .Type = vbPicTypeBitmap ' 图象类型

        .hBmp = hBmp ' 位图句柄

        .hPal = hPal ' 调色板句柄

        End With

        '建立Picture图象

        r = OleCreatePictureIndirect(Pic, IID_IDispatch, 1, IPic)

        '返回Picture对象

        Set CreateBitmapPicture = IPic

       End Function

       Public Function CaptureWindow(ByVal hWndSrc As Long, ByVal Client As Boolean, ByVal _

        LeftSrc As Long, ByVal TopSrc As Long, ByVal WidthSrc As Long, ByVal HeightSrc _

        As Long) As Picture

        Dim hDCMemory As Long

        Dim hBmp As Long

        Dim hBmpPrev As Long

        Dim r As Long

        Dim hDCSrc As Long

        Dim hPal As Long

        Dim hPalPrev As Long

        Dim RasterCapsScrn As Long

        Dim HasPaletteScrn As Long

        Dim PaletteSizeScrn As Long

        Dim LogPal As LOGPALETTE

        If Client Then

        hDCSrc = GetDC(hWndSrc)

        Else

        hDCSrc = GetWindowDC(hWndSrc)

        End If

        hDCMemory = CreateCompatibleDC(hDCSrc)

        hBmp = CreateCompatibleBitmap(hDCSrc, WidthSrc, HeightSrc)

        hBmpPrev = SelectObject(hDCMemory, hBmp)

        '获得屏幕属性

        RasterCapsScrn = GetDeviceCaps(hDCSrc, RASTERCAPS)

        HasPaletteScrn = RasterCapsScrn And RC_PALETTE

        PaletteSizeScrn = GetDeviceCaps(hDCSrc, SIZEPALETTE)

        '如果屏幕对象有调色板则获得屏幕调色板

        If HasPaletteScrn And (PaletteSizeScrn = ) Then

        '建立屏幕调色板的拷贝

        LogPal.palVersion = &H

        LogPal.palNumEntries =

        r = GetSystemPaletteEntries(hDCSrc, 0, , LogPal.palPalEntry(0))

        hPal = CreatePalette(LogPal)

        '将新建立的调色板选如建立的内存绘图句柄中

        hPalPrev = SelectPalette(hDCMemory, hPal, 0)

        r = RealizePalette(hDCMemory)

        End If

        '拷贝图象

        r = BitBlt(hDCMemory, 0, 0, WidthSrc, HeightSrc, hDCSrc, LeftSrc, TopSrc, vbSrcCopy)

        hBmp = SelectObject(hDCMemory, hBmpPrev)

        If HasPaletteScrn And (PaletteSizeScrn = ) Then

        hPal = SelectPalette(hDCMemory, hPalPrev, 0)

        End If

        '释放资源

        r = DeleteDC(hDCMemory)

        r = ReleaseDC(hWndSrc, hDCSrc)

        Set CaptureWindow = CreateBitmapPicture(hBmp, hPal)

       End Function

       'capturescreen函数捕捉整个屏幕图象

       Public Function CaptureScreen() As Picture

        Dim hWndScreen As Long

        '获得桌面的窗口句柄

        hWndScreen = GetDesktopWindow()

        Set CaptureScreen = CaptureWindow(hWndScreen, False, 0, 0, Screen.Width _

        \ Screen.TwipsPerPixelX, Screen.Height \ Screen.TwipsPerPixelY)

       End Function

       Public Function CaptureActiveWindow() As Picture

        Dim hWndActive As Long

        Dim r As Long

        Dim RectActive As RECT

        hWndActive = GetForegroundWindow()

        r = GetWindowRect(hWndActive, RectActive)

        Set CaptureActiveWindow = CaptureWindow(hWndActive, False, 0, 0, _

        RectActive.Right - RectActive.Left, RectActive.Bottom - RectActive.Top)

       End Function

       Public Sub PrintPictureToFitPage(Prn As Printer, Pic As Picture)

        Const vbHiMetric As Integer = 8

        Dim PicRatio As Double

        Dim PrnWidth As Double

        Dim PrnHeight As Double

        Dim PrnRatio As Double

        Dim PrnPicWidth As Double

        Dim PrnPicHeight As Double

        If Pic.Height >= Pic.Width Then

        Prn.Orientation = vbPRORPortrait

        Else

        Prn.Orientation = vbPRORLandscape

        End If

        PicRatio = Pic.Width / Pic.Height

        PrnWidth = Prn.ScaleX(Prn.ScaleWidth, Prn.ScaleMode, vbHiMetric)

        PrnHeight = Prn.ScaleY(Prn.ScaleHeight, Prn.ScaleMode, vbHiMetric)

        PrnRatio = PrnWidth / PrnHeight

        If PicRatio >= PrnRatio Then

        PrnPicWidth = Prn.ScaleX(PrnWidth, vbHiMetric, Prn.ScaleMode)

        PrnPicHeight = Prn.ScaleY(PrnWidth / PicRatio, vbHiMetric, Prn.ScaleMode)

        Else

        PrnPicHeight = Prn.ScaleY(PrnHeight, vbHiMetric, Prn.ScaleMode)

        PrnPicWidth = Prn.ScaleX(PrnHeight * PicRatio, vbHiMetric, Prn.ScaleMode)

        End If

        Prn.PaintPicture Pic, 0, 0, PrnPicWidth, PrnPicHeight

       End Sub

       Private Sub Command4_Click()

        CommonDialog1.DefaultExt = ".BMP"

        CommonDialog1.Filter = "Bitmap Image (*.bmp)|*.bmp"

        CommonDialog1.ShowSave

        If CommonDialog1.FileName <> "" Then

        SavePicture Picture1.Picture, CommonDialog1.FileName

        End If

       End Sub

       Private Sub Command5_Click()

        PrintPictureToFitPage Printer, Picture1.Picture

        Printer.EndDoc

       End Sub

       Private Sub Form_Load()

        Command1.Caption = "捕捉整个屏幕"

        Command2.Caption = "两秒钟后捕捉活动窗口"

        Command3.Caption = "清除图象"

        Command4.Caption = "保存图象"

        Command5.Caption = "打印图象"

       End Sub

        运行程序，点击command1或者Command2就可以捕捉成个屏幕或者窗口到Picture1中，然后点击Command4或者Command5就可以保存或打印图象。

        上面的程序中最重要的是CaptureWindow函数以及CreateBitmapPicture函数，CaptureWindow函数建立与要捕捉的窗口的绘图设备（Device Context）句柄相兼容的绘图设备（Device Context）句柄，然后建立相应的调色板，最后将绘图设备（Device Context）中的tvbox内置源码图象拷贝到一个hBitmap对象句柄中。CreateBitmapPicture函数则根据传递过来的hBitmap对象句柄和调色板句柄建立一个Picture对象。在将这个对象赋予PictureBox的Picture属性，然后就可以使用SavePicture函数来保存图象了。poi源码原理

        OleCreatePictureIndirect函数支持的不仅有BMP图象，同时也支持Ico图标，所以利用该函数和ExtractIcon函数也可以提取并保存Windows文件中的源码精灵地龙图标。有兴趣的读者可以到我的主页/~blackcat上下载源程序。