|
suppose i have a list control which i draw a vertical gradient as the background.
now, suppose i want to draw the state of selection. my code should be as follows:
if (bIsItemSelected)
{
..... draw the selected item
}
else
{
.... just draw the text and erase any previous selected drawings
}
problem is that if an item once was selected,and now i am changing to an other item, the selected item (origin one) keeps it selected drawing rectangle....
i'm not sure how to erase it, since i am using a vertical gradient as the list background....
is there a way (maybe using blt?) to tell the list just to draw the text but as transparent?
and erase any previous selected rectangles that may have been drawn?
thanks in advanced
yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote 
-- modified at 17:13 Friday 12th May, 2006
|
|
|
|
|
YaronNir wrote: erase any previous selected rectangles that may have been drawn?
No such thing as erasing. Perhaps there is a masking sort of technique that would cause an erasing effect. That is beyond my graphics knowledge.
One thing I think would work is to draw the background into a memory DC. When you paint the background you could blt it. When you need to perform the erase effect you could blt just the rectangle that has become invalid.
"What classes are you using ? You shouldn't call stuff if you have no idea what it does"
Christian Graus in the C# forum
led mike
|
|
|
|
|
well, aparently working with memDC solved the problem
it draws only what it needs and keep the original state
the bitblt does all that work
thank mate
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
|
|
|
|
|
Hi all,
I've create a class named CListCtrlEx derived from CListCtrl.
it is created as follows:
BOOL CListCtrlEx::Create(CWnd* pParentWnd,UINT nID)
{
DWORD dwFlags = WS_CHILD|WS_TABSTOP|LVS_SMALLICON|LVS_SINGLESEL|LVS_SHOWSELALWAYS|WS_VISIBLE|LVS_NOCOLUMNHEADER;
return CListCtrl::Create( dwFlags, CRect(0,0,0,0) , pParentWnd , nID);
}
BOOL CListCtrlEx::PreCreateWindow(CREATESTRUCT& cs)
{
cs.dwExStyle |= WS_EX_CLIENTEDGE;
cs.style &= ~LVS_TYPEMASK;
cs.style |= (LVS_SHOWSELALWAYS | LVS_OWNERDRAWFIXED);
return CListCtrl::PreCreateWindow(cs);
}
in the message map i use :
BEGIN_MESSAGE_MAP(CListCtrlEx, CListCtrl)
ON_WM_PAINT()
ON_WM_CREATE()
ON_WM_DESTROY()
ON_WM_ERASEBKGND()
ON_WM_MEASUREITEM_REFLECT()
END_MESSAGE_MAP()
in MeasureItem :
void CListCtrlEx::MeasureItem( LPMEASUREITEMSTRUCT lpMeasureItemStruct )
{
lpMeasureItemStruct->itemHeight = ITEM_HEIGHT;
}
and in OnPaint:
void CListCtrlEx::OnPaint()
{
CPaintDC dc(this);
int nCount = GetItemCount();
DRAWITEMSTRUCT drawItem;
for(int i=0; i < nCount;i++)
{
drawItem.itemID = i;
drawItem.CtlID = GetDlgCtrlID();
drawItem.CtlType = ODT_LISTVIEW;
drawItem.hDC = dc.m_hDC;
drawItem.hwndItem = m_hWnd;
drawItem.itemAction = ODA_DRAWENTIRE;
drawItem.itemState = 0;
GetItemRect(i,&drawItem.rcItem,LVIR_BOUNDS);
DrawItem(&drawItem);
}
}
I add items as follows:
m_List.Create(this,IDC_MY_LIST);
m_List.InsertItem(0,_T("aaaaaaaa"));
m_List.InsertItem(1,_T("bbbbbbbb"));
Problem is that i see the fist item from the middle of the list and not the top of it??
Any suggestions?
thanks
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
-- modified at 15:05 Friday 12th May, 2006
|
|
|
|
|
|
well i tried what you have suggest and i implemented OnDrawItem, but the trouble is
it is never being called???
help?
thanks
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
|
|
|
|
|
well, I've figured out that the problem was the LVS_SMALLICON...so i've changed it to LVS_REPORT and it is drawing propely.
now i have a new problem, the LVN_ITEMCHANGED is not being called???
help?
thanks
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
|
|
|
|
|
Could somebody convert the following code to C++ for me, I am having trouble using the methods from the dll file. I can't even include it in the referenced section.
Imports System.Runtime.InteropServices<br />
<br />
Public Class WasiForm1<br />
Inherits System.Windows.Forms.Form<br />
<br />
#Region " Windows Form Designer generated code "<br />
<br />
Public Sub New()<br />
MyBase.New()<br />
<br />
'This call is required by the Windows Form Designer.<br />
InitializeComponent()<br />
<br />
'Add any initialization after the InitializeComponent() call<br />
<br />
End Sub<br />
<br />
'Form overrides dispose to clean up the component list.<br />
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)<br />
If disposing Then<br />
If Not (components Is Nothing) Then<br />
components.Dispose()<br />
End If<br />
End If<br />
MyBase.Dispose(disposing)<br />
End Sub<br />
<br />
'Required by the Windows Form Designer<br />
Private components As System.ComponentModel.IContainer<br />
<br />
'NOTE: The following procedure is required by the Windows Form Designer<br />
'It can be modified using the Windows Form Designer. <br />
'Do not modify it using the code editor.<br />
Friend WithEvents picCapture As System.Windows.Forms.PictureBox<br />
Friend WithEvents lstDevices As System.Windows.Forms.ListBox<br />
Friend WithEvents lblDevice As System.Windows.Forms.Label<br />
Friend WithEvents btnStart As System.Windows.Forms.Button<br />
Friend WithEvents btnSave As System.Windows.Forms.Button<br />
Friend WithEvents btnStop As System.Windows.Forms.Button<br />
Friend WithEvents sfdImage As System.Windows.Forms.SaveFileDialog<br />
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()<br />
Me.picCapture = New System.Windows.Forms.PictureBox<br />
Me.lstDevices = New System.Windows.Forms.ListBox<br />
Me.lblDevice = New System.Windows.Forms.Label<br />
Me.btnStart = New System.Windows.Forms.Button<br />
Me.btnSave = New System.Windows.Forms.Button<br />
Me.btnStop = New System.Windows.Forms.Button<br />
Me.sfdImage = New System.Windows.Forms.SaveFileDialog<br />
Me.SuspendLayout()<br />
'<br />
'picCapture<br />
'<br />
Me.picCapture.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D<br />
Me.picCapture.Location = New System.Drawing.Point(200, 24)<br />
Me.picCapture.Name = "picCapture"<br />
Me.picCapture.Size = New System.Drawing.Size(256, 272)<br />
Me.picCapture.TabIndex = 0<br />
Me.picCapture.TabStop = False<br />
'<br />
'lstDevices<br />
'<br />
Me.lstDevices.Location = New System.Drawing.Point(8, 55)<br />
Me.lstDevices.Name = "lstDevices"<br />
Me.lstDevices.Size = New System.Drawing.Size(184, 238)<br />
Me.lstDevices.TabIndex = 1<br />
'<br />
'lblDevice<br />
'<br />
Me.lblDevice.Location = New System.Drawing.Point(8, 32)<br />
Me.lblDevice.Name = "lblDevice"<br />
Me.lblDevice.Size = New System.Drawing.Size(184, 16)<br />
Me.lblDevice.TabIndex = 2<br />
Me.lblDevice.Text = "Available Devices"<br />
Me.lblDevice.TextAlign = System.Drawing.ContentAlignment.TopCenter<br />
'<br />
'btnStart<br />
'<br />
Me.btnStart.Location = New System.Drawing.Point(20, 320)<br />
Me.btnStart.Name = "btnStart"<br />
Me.btnStart.Size = New System.Drawing.Size(112, 32)<br />
Me.btnStart.TabIndex = 3<br />
Me.btnStart.Text = "Start Preview"<br />
'<br />
'btnSave<br />
'<br />
Me.btnSave.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)<br />
Me.btnSave.Location = New System.Drawing.Point(336, 320)<br />
Me.btnSave.Name = "btnSave"<br />
Me.btnSave.Size = New System.Drawing.Size(112, 32)<br />
Me.btnSave.TabIndex = 4<br />
Me.btnSave.Text = "Save Image"<br />
'<br />
'btnStop<br />
'<br />
Me.btnStop.Location = New System.Drawing.Point(184, 320)<br />
Me.btnStop.Name = "btnStop"<br />
Me.btnStop.Size = New System.Drawing.Size(112, 32)<br />
Me.btnStop.TabIndex = 5<br />
Me.btnStop.Text = "Stop Preview"<br />
'<br />
'sfdImage<br />
'<br />
Me.sfdImage.FileName = "Webcam1"<br />
Me.sfdImage.Filter = "Bitmap|*.bmp"<br />
'<br />
'WasiForm1<br />
'<br />
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)<br />
Me.ClientSize = New System.Drawing.Size(472, 382)<br />
Me.Controls.Add(Me.btnStop)<br />
Me.Controls.Add(Me.btnSave)<br />
Me.Controls.Add(Me.btnStart)<br />
Me.Controls.Add(Me.lblDevice)<br />
Me.Controls.Add(Me.lstDevices)<br />
Me.Controls.Add(Me.picCapture)<br />
Me.Name = "WasiForm1"<br />
Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen<br />
Me.Text = "Video Capture"<br />
Me.ResumeLayout(False)<br />
<br />
End Sub<br />
<br />
#End Region<br />
<br />
Const WM_CAP As Short = &H400S<br />
<br />
Const WM_CAP_DRIVER_CONNECT As Integer = WM_CAP + 10<br />
Const WM_CAP_DRIVER_DISCONNECT As Integer = WM_CAP + 11<br />
Const WM_CAP_EDIT_COPY As Integer = WM_CAP + 30<br />
<br />
Const WM_CAP_SET_PREVIEW As Integer = WM_CAP + 50<br />
Const WM_CAP_SET_PREVIEWRATE As Integer = WM_CAP + 52<br />
Const WM_CAP_SET_SCALE As Integer = WM_CAP + 53<br />
Const WS_CHILD As Integer = &H40000000<br />
Const WS_VISIBLE As Integer = &H10000000<br />
Const SWP_NOMOVE As Short = &H2S<br />
Const SWP_NOSIZE As Short = 1<br />
Const SWP_NOZORDER As Short = &H4S<br />
Const HWND_BOTTOM As Short = 1<br />
<br />
Dim iDevice As Integer = 0 ' Current device ID<br />
Dim hHwnd As Integer ' Handle to preview window<br />
<br />
Declare Function SendMessage Lib "user32" Alias "SendMessageA" _<br />
(ByVal hwnd As Integer, ByVal wMsg As Integer, ByVal wParam As Integer, _<br />
<MarshalAs(UnmanagedType.AsAny)> ByVal lParam As Object) As Integer<br />
<br />
Declare Function SetWindowPos Lib "user32" Alias "SetWindowPos" (ByVal hwnd As Integer, _<br />
ByVal hWndInsertAfter As Integer, ByVal x As Integer, ByVal y As Integer, _<br />
ByVal cx As Integer, ByVal cy As Integer, ByVal wFlags As Integer) As Integer<br />
<br />
Declare Function DestroyWindow Lib "user32" (ByVal hndw As Integer) As Boolean<br />
<br />
Declare Function capCreateCaptureWindowA Lib "avicap32.dll" _<br />
(ByVal lpszWindowName As String, ByVal dwStyle As Integer, _<br />
ByVal x As Integer, ByVal y As Integer, ByVal nWidth As Integer, _<br />
ByVal nHeight As Short, ByVal hWndParent As Integer, _<br />
ByVal nID As Integer) As Integer<br />
<br />
Declare Function capGetDriverDescriptionA Lib "avicap32.dll" (ByVal wDriver As Short, _<br />
ByVal lpszName As String, ByVal cbName As Integer, ByVal lpszVer As String, _<br />
ByVal cbVer As Integer) As Boolean<br />
<br />
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load<br />
LoadDeviceList()<br />
If lstDevices.Items.Count > 0 Then<br />
btnStart.Enabled = True<br />
lstDevices.SelectedIndex = 1<br />
iDevice = lstDevices.SelectedIndex<br />
OpenPreviewWindow()<br />
btnStart.Enabled = False<br />
Else<br />
lstDevices.Items.Add("No Capture Device")<br />
btnStart.Enabled = False<br />
End If<br />
<br />
btnStop.Enabled = True<br />
btnSave.Enabled = True<br />
picCapture.SizeMode = PictureBoxSizeMode.StretchImage<br />
End Sub<br />
<br />
Private Sub LoadDeviceList()<br />
Dim strName As String = Space(100)<br />
Dim strVer As String = Space(100)<br />
Dim bReturn As Boolean<br />
Dim x As Integer = 0<br />
<br />
' <br />
' Load name of all available devices into the lstDevices<br />
'<br />
<br />
Do<br />
'<br />
' Get Driver name and version<br />
'<br />
bReturn = capGetDriverDescriptionA(x, strName, 100, strVer, 100)<br />
<br />
'<br />
' If there was a device add device name to the list<br />
'<br />
If bReturn Then lstDevices.Items.Add(strName.Trim)<br />
x += 1<br />
Loop Until bReturn = False<br />
End Sub<br />
<br />
Private Sub OpenPreviewWindow()<br />
Dim iHeight As Integer = picCapture.Height<br />
Dim iWidth As Integer = picCapture.Width<br />
<br />
'<br />
' Open Preview window in picturebox<br />
'<br />
hHwnd = capCreateCaptureWindowA(iDevice, WS_VISIBLE Or WS_CHILD, 0, 0, 640, _<br />
480, picCapture.Handle.ToInt32, 0)<br />
<br />
'<br />
' Connect to device<br />
'<br />
If SendMessage(hHwnd, WM_CAP_DRIVER_CONNECT, iDevice, 0) Then<br />
'<br />
'Set the preview scale<br />
'<br />
SendMessage(hHwnd, WM_CAP_SET_SCALE, True, 0)<br />
<br />
'<br />
'Set the preview rate in milliseconds<br />
'<br />
SendMessage(hHwnd, WM_CAP_SET_PREVIEWRATE, 66, 0)<br />
<br />
'<br />
'Start previewing the image from the camera<br />
'<br />
SendMessage(hHwnd, WM_CAP_SET_PREVIEW, True, 0)<br />
<br />
'<br />
' Resize window to fit in picturebox<br />
'<br />
SetWindowPos(hHwnd, HWND_BOTTOM, 0, 0, picCapture.Width, picCapture.Height, _<br />
SWP_NOMOVE Or SWP_NOZORDER)<br />
<br />
btnSave.Enabled = True<br />
btnStop.Enabled = True<br />
btnStart.Enabled = False<br />
Else<br />
'<br />
' Error connecting to device close window<br />
' <br />
DestroyWindow(hHwnd)<br />
<br />
btnSave.Enabled = False<br />
End If<br />
End Sub<br />
<br />
Private Sub btnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStart.Click<br />
iDevice = lstDevices.SelectedIndex<br />
OpenPreviewWindow()<br />
End Sub<br />
<br />
Private Sub ClosePreviewWindow()<br />
'<br />
' Disconnect from device<br />
'<br />
SendMessage(hHwnd, WM_CAP_DRIVER_DISCONNECT, iDevice, 0)<br />
<br />
'<br />
' close window<br />
'<br />
<br />
DestroyWindow(hHwnd)<br />
End Sub<br />
<br />
Private Sub btnStop_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStop.Click<br />
ClosePreviewWindow()<br />
btnSave.Enabled = False<br />
btnStart.Enabled = True<br />
btnStop.Enabled = False<br />
End Sub<br />
<br />
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click<br />
Dim data As IDataObject<br />
Dim bmap As Image<br />
<br />
'<br />
' Copy image to clipboard<br />
'<br />
SendMessage(hHwnd, WM_CAP_EDIT_COPY, 0, 0)<br />
<br />
'<br />
' Get image from clipboard and convert it to a bitmap<br />
'<br />
data = Clipboard.GetDataObject()<br />
If data.GetDataPresent(GetType(System.Drawing.Bitmap)) Then<br />
bmap = CType(data.GetData(GetType(System.Drawing.Bitmap)), Image)<br />
picCapture.Image = bmap<br />
ClosePreviewWindow()<br />
btnSave.Enabled = False<br />
btnStop.Enabled = False<br />
btnStart.Enabled = True<br />
<br />
If sfdImage.ShowDialog = DialogResult.OK Then<br />
bmap.Save(sfdImage.FileName, Imaging.ImageFormat.Bmp)<br />
End If<br />
<br />
End If<br />
End Sub<br />
<br />
Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing<br />
If btnStop.Enabled Then<br />
ClosePreviewWindow()<br />
End If<br />
End Sub<br />
End Class
Below is the code that I have attempted to write through conversion. Could you also tell me of tutorials to help write video and image applications from scratch. The code above is not mine, I am just re-writing it to understand what needs to be done for graphical applications.
<br />
#pragma once<br />
<br />
<br />
<br />
<br />
namespace Webcam<br />
{<br />
using namespace System;<br />
using namespace System::ComponentModel;<br />
using namespace System::Collections;<br />
using namespace System::Windows::Forms;<br />
using namespace System::Data;<br />
using namespace System::Drawing;<br />
public __gc class Form1 : public System::Windows::Forms::Form<br />
{ <br />
public:<br />
Form1(void)<br />
{<br />
InitializeComponent();<br />
WM_CAP = 1024;<br />
WM_CAP_DRIVER_CONNECT = WM_CAP + 10;<br />
WM_CAP_DRIVER_DISCONNECT = WM_CAP + 11;<br />
WM_CAP_EDIT_COPY = WM_CAP + 30;<br />
WM_CAP_SET_PREVIEW = WM_CAP + 50;<br />
WM_CAP_SET_PREVIEWRATE = WM_CAP + 52;<br />
WM_CAP_SET_SCALE = WM_CAP + 53;<br />
WS_CHILD = 1073741824;<br />
WS_VISIBLE = 268435456;<br />
SWP_NOMOVE = 2;<br />
SWP_NOSIZE = 1;<br />
SWP_NOZORDER = 4;<br />
HWND_BOTTOM = 1;<br />
}<br />
<br />
void loadDeviceList(void)<br />
{<br />
Boolean bReturn = false;<br />
String *strName = "";<br />
String *strVer = "";<br />
int x = 0;<br />
while(bReturn == true)<br />
{<br />
<br />
}<br />
}<br />
<br />
void openWindow()<br />
{<br />
int iHeight = Camera_View->Height;<br />
int iWidth = Camera_View->Width;<br />
}<br />
<br />
void closeWindow()<br />
{<br />
<br />
}<br />
<br />
void Load()<br />
{<br />
if(list->Items->Count > 0)<br />
{<br />
button1->Enabled = true;<br />
list->SelectedIndex = 1;<br />
iDevice = list->SelectedIndex;<br />
openWindow();<br />
button1->Enabled = false;<br />
}<br />
else<br />
{<br />
button1->Enabled = false;<br />
}<br />
button2->Enabled = true;<br />
button3->Enabled = true;<br />
Camera_View->SizeMode = PictureBoxSizeMode::StretchImage;<br />
}<br />
<br />
protected:<br />
void Dispose(Boolean disposing)<br />
{<br />
if (disposing && components)<br />
{<br />
components->Dispose();<br />
}<br />
__super::Dispose(disposing);<br />
}<br />
private: System::Windows::Forms::ListBox * list;<br />
private: System::Windows::Forms::Button * button1;<br />
private: System::Windows::Forms::Button * button2;<br />
private: System::Windows::Forms::Button * button3;<br />
private: System::Windows::Forms::SaveFileDialog * Save_File;<br />
private: System::Windows::Forms::PictureBox * Camera_View;<br />
<br />
private:<br />
int iDevice;<br />
int hHwnd;<br />
signed short int WM_CAP;<br />
signed int WM_CAP_DRIVER_CONNECT;<br />
signed int WM_CAP_DRIVER_DISCONNECT;<br />
signed int WM_CAP_EDIT_COPY;<br />
signed int WM_CAP_SET_PREVIEW;<br />
signed int WM_CAP_SET_PREVIEWRATE;<br />
signed int WM_CAP_SET_SCALE;<br />
signed int WS_CHILD;<br />
signed int WS_VISIBLE;<br />
signed short int SWP_NOMOVE;<br />
signed short int SWP_NOSIZE;<br />
signed short int SWP_NOZORDER;<br />
signed short int HWND_BOTTOM;<br />
System::ComponentModel::Container * components;<br />
<br />
void InitializeComponent(void)<br />
{<br />
this->list = new System::Windows::Forms::ListBox();<br />
this->button1 = new System::Windows::Forms::Button();<br />
this->button2 = new System::Windows::Forms::Button();<br />
this->button3 = new System::Windows::Forms::Button();<br />
this->Save_File = new System::Windows::Forms::SaveFileDialog();<br />
this->Camera_View = new System::Windows::Forms::PictureBox();<br />
this->SuspendLayout();<br />
this->list->Location = System::Drawing::Point(48, 48);<br />
this->list->Name = S"list";<br />
this->list->Size = System::Drawing::Size(184, 290);<br />
this->list->TabIndex = 0;<br />
this->button1->Location = System::Drawing::Point(56, 368);<br />
this->button1->Name = S"button1";<br />
this->button1->Size = System::Drawing::Size(128, 48);<br />
this->button1->TabIndex = 1;<br />
this->button1->Text = S"Start Preview";<br />
this->button1->Click += new System::EventHandler(this, button1_Click);<br />
this->button2->Location = System::Drawing::Point(224, 368);<br />
this->button2->Name = S"button2";<br />
this->button2->Size = System::Drawing::Size(128, 48);<br />
this->button2->TabIndex = 2;<br />
this->button2->Text = S"Stop Preview";<br />
this->button2->Click += new System::EventHandler(this, button2_Click);<br />
this->button3->Location = System::Drawing::Point(384, 368);<br />
this->button3->Name = S"button3";<br />
this->button3->Size = System::Drawing::Size(128, 48);<br />
this->button3->TabIndex = 3;<br />
this->button3->Text = S"Save Image";<br />
this->button3->Click += new System::EventHandler(this, button3_Click);<br />
this->Camera_View->Location = System::Drawing::Point(248, 48);<br />
this->Camera_View->Name = S"Camera_View";<br />
this->Camera_View->Size = System::Drawing::Size(272, 288);<br />
this->Camera_View->TabIndex = 4;<br />
this->Camera_View->TabStop = false;<br />
this->AutoScaleBaseSize = System::Drawing::Size(5, 13);<br />
this->ClientSize = System::Drawing::Size(560, 470);<br />
this->Controls->Add(this->Camera_View);<br />
this->Controls->Add(this->button3);<br />
this->Controls->Add(this->button2);<br />
this->Controls->Add(this->button1);<br />
this->Controls->Add(this->list);<br />
this->Name = S"Form1";<br />
this->Text = S"Camera";<br />
this->ResumeLayout(false);<br />
<br />
}<br />
private: System::Void button1_Click(System::Object * sender, System::EventArgs * e)<br />
{<br />
iDevice = list->SelectedIndex;<br />
openWindow();<br />
}<br />
<br />
private: System::Void button2_Click(System::Object * sender, System::EventArgs * e)<br />
{<br />
closeWindow();<br />
button1->Enabled = true;<br />
button2->Enabled = false;<br />
button3->Enabled = false;<br />
}<br />
<br />
private: System::Void button3_Click(System::Object * sender, System::EventArgs * e)<br />
{<br />
IDataObject * data;<br />
Image * bmap;<br />
<br />
<br />
data = Clipboard::GetDataObject();<br />
<br />
<br />
if(data->GetDataPresent(bmap->GetType()))<br />
{<br />
Type * dataType = data->GetType();<br />
<br />
<br />
bmap = data->GetData(dataType);
Camera_View->Image = bmap;<br />
button1->Enabled = true;<br />
button2->Enabled = false;<br />
button3->Enabled = false;<br />
<br />
if(Save_File->ShowDialog() == DialogResult::OK)<br />
{<br />
bmap->Save(Save_File->FileName,Imaging::ImageFormat::Bmp);<br />
} <br />
} <br />
}<br />
};<br />
}
Thanks
|
|
|
|
|
How much are you willing to pay? We are happy to answer particular questions for you, but it is a bit much to ask someone to do your work for you.
Deus caritas est
|
|
|
|
|
you're joking, aren't you ?! 
firstly, the is VB.NET, so it wont be converted directly to C++ but into Managed C++
secondly, why don't you do yourself ? because you don't understand the original code, or because you don't know C++ ?
at last, don't expect us to solv a whole problem like that. we here at codeproject answer questions for fun, so no one pay us, and we generally allow to give ous services on specific points...
do you homework yourself buddy 
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]
|
|
|
|
|
toxcct wrote: do you homework yourself buddy
Math Homework or General Homework
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
|
|
|
|
|
Forgive the sinner 
|
|
|
|
|
I'm a university student. I enjoy programming and am in favour of Java, but I have seen that C++ .NET can offer alot to the programmer. I am not asking for you to do it all, I have attempted to do it myself. I am not sure as to how well I am foing however, could you please direct me in the direction of a tutorial site to aid me if you feel I am going to benefit in an unproper way.
I need to understand from scratch how to do it. I am really sruggling with obtaining the methods from the avicap32.dll and the user32.dll, am I having problems because I am making a .NET application. I haven't a clue as to how to do this. Some guidance, any, is appreciated.
|
|
|
|
|
Thanks, but you're wrong, if you have seen what I have written further down you will see that I am asking for help. Could you direct me towards a tutorial which will teach me.
I want to learn, not copy.
|
|
|
|
|
Hi...
I have a App which is associated with an specified file type... So when i execute this data file, my application will be launched...
My Problem is that in this situation the data file will be locked and f.e. i can't rename them...
Exist any solution to prevent this locking mechanism ?
THX...
-- modified at 13:40 Friday 12th May, 2006
|
|
|
|
|
|
Hehhh,
i will precisice my problem, maybe you mitunderstood me...
I want to carry out my application with the file association, but generally the file will be locked from the shell...
I hoped it exists any shell settings to share the file...
|
|
|
|
|
I am using Visual Dev 2003 with a CHTMLView derived Class as part of a larger application. The content pages have HTML wrappers with Flash content.
It's been working fine with IE 6, but after installing IE 7 beta 2, I get the equivalent of "cannot display web page" on the first clicking of an internal or external link after timing out. When I click it a second time, it works!
Anybody else run into this, any suggested fixes?
|
|
|
|
|
Hello,
I would like to know, how could i restore the each and every pixel value of a picture in an edit box?
unsigned char value;
CString m_strbpp;
for(i=1;i<100;i=i+1)
for(j=1;j<100;j=j+1)
{
value=B.GetPixel32(i,j);
m_strbpp.Format("%d",value);
}
|
|
|
|
|
<br />
COLORREF colorref;<br />
BYTE r,g,b;<br />
for(int i=0;i<20;i++)<br />
for(int j=0;j<20;j++)<br />
{<br />
colorref=GetPixel(hdc,i,j);<br />
<br />
r=GetRValue(colorref);<br />
g=GetGValue(colorref);<br />
b=GetBValue(colorref);<br />
CString str;<br />
str.Format("r=%d,g=%d,b=%d",r,g,b);<br />
m_Edit.SetWindowText(str);<br />
}<br />
<br />
|
|
|
|
|
Hi there,I have an VC++ application that is using a CListControl and the problem is that when i press ESC, it executes the function for adding text in the list that i am using.How to check why is this happening and how pressing ESC and the function i wrote are connected?
I tried with WM_KEY but it didn't work.
Thanx in advance
|
|
|
|
|
What code do you have in place for monitoring the Esc key?
"The largest fire starts with but the smallest spark." - David Crow
|
|
|
|
|
Message Closed
modified 28-Sep-16 7:19am.
|
|
|
|
|
oliver_mak wrote: case VK_ESCAPE :OnEscape();
But what does OnEscape() do?
"The largest fire starts with but the smallest spark." - David Crow
|
|
|
|
|
Message Removed
modified 28-Sep-16 7:29am.
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
