I wrote a simple clock that shows the time over bitmap as follows:
Code:
void CMyClock::OnPaint()
{
CRect rect;
GetClientRect(&rect);
[Code]....
Now I got rid off the white border but everytime I draw a text it write on top of the previous text so after few seconds everything is a mess and the time is no longer readable.
I've been given the task of converting a java application to a c# windows form application. The program displays a Mandelbrot which then allows the user to zoom into. I've managed to display the Mandelbrot and even zoom. However when dragging a box to zoom, the box its self doesn't show, meaning the user cannot see what area they will be zooming into.
I believe I need to call the update function which draws the rectangle as I drag however no matter what I try, I get errors from a red cross instead of the Mandelbrot to compile errors. Here is the code that I believe is relevant.
public void update(Graphics g) {
Color color = Color.White;
Pen myPen = new Pen(color);
g.DrawImage(myBitmap, 0, 0);
if (rectangle) {
[Code]....
I'm trying to create a dialog where some of the buttons have pictures on them, rather than plain text. I notice that under the button's properties, under the "styles" tab there's a checkbox "bitmap". I can't seem to find any easy way of setting a bitmap.
View 4 Replies View RelatedI have a function that essentially takes a screen shot and saves a pointer to it as a structure. I would like to use the same structure for bitmaps that I load from files.
Code:
typedef struct _BITMAPCAPTURE {
HBITMAP hbm;
LPDWORD pixels;
INT width;
INT height;
} BITMAPCAPTURE;
BOOL CaptureScreen(BITMAPCAPTURE* bmpCapture) {
[code].....
The handle to the bitmap, as well as the width and height are all easy enough to get but I'm unsure of how to get the pixels.
I am trying to do this:
while(1)
{
CaptureScreenshot (as BMP)
Convert screenshot to 24 bit instead of 32 bit
Resize screenshot size
Get the BMP bits array of the resized screenshot
}
I have it working but the best i could get is 18 iteration (screenshots) per second. This is what i do:
Code:
Start() {
ULONG_PTR gdiplusToken=0;
HDC mhCompatibleDC;
HBITMAP mhCompatibleBitmap;
HWND mhDesktopWnd;
HDC mhDesktopDC;
byte*piRGB=new byte[1200*900*3]
[Code] .....
Here i do things with piRGB but these things are not counted it the timer so you can assume here the code ends . As said as the code looks now, i can fill piRGB ~18 times (18loops) in 1 second. I must improve that...
I have this code, where I capture window and make copy to bitmap of it. I am working on rotation of bitmap. But my problem is that when I save the image to file the result is just a black screen. It looks like there could be some problem either in GdipCreateBitmapFromHBITMAP() or GdipGetImageGraphicsContext()
How to fix it and to get the rotated image?
Code:
// CODE 81 and 82 de facto no difference
#defineCODE85 // 81
#defineWINDOW_MIN_HEIGHT200
[Code].....
I have an SDI / CView app (VS 2010). All works well until I minimize the app using the minimize button or drag it partially off of the screen. In the former instance, any attempt to restore the app results in an appcrash with a tight freeze up of the machine. In the later instance the same happens immediately.
In building the app, I scoured the web for code to accomplish the loading and display of the bitmap. After some experimentation I settled on overriding the OnPaint. Below is the code. Note that m_Map is a CBitmap member and IDB_BITMAP1 is a loaded bitmap resource.
Code:
void CMyDragViewView::OnPaint()
{
// CPaintDC dc(this); // device context for painting
// TODO: Add your message handler code here
// Do not call CView::OnPaint() for painting messages
// http://msgroups.net/microsoft.public.vc.mfc/loading-bitmaps-into-main-window/563285
int x = m_Map.LoadBitmap(IDB_BITMAP1);
TRACE1(" x = %d
", x);
CPaintDC* dc = new CPaintDC(this);
[code]....
I suspect that the problem is OnPaint trying to repaint the bitmap which requires reloading it, but I don't know how to work around this.
I have a CScrollView that displays a bitmap and I'm trying to draw a grid that I can turn off and on by check box and when the mouse is over a section of the grid that square highlights... I do all the drawing in the ondraw function... But when I have many grid squares it becomes slow to scroll and to highlight the square the mouse is over... I'm not sure the best way to go about this and where to place code to speed it up... The bitmap is only loaded once... But in ondraw the grid has to redraw every time scrolled and when mouse moved over a square.. In onmousemove I call invalidate so the square under mouse changes...
View 5 Replies View RelatedI am drawing in a simple (square) MFC window. I realize that (0,0) starts in the upper left hand corner. I wanted to see how MFC handled drawing of angles, so I use this code:
Code:
double CompassDegreesToRadians(double compassDegrees) {
return((PI / 2.0f) - (compassDegrees * PI / 180.0f));
}
// Make pen
CPen penRed;
penRed.CreatePen(PS_SOLID | PS_COSMETIC, 1, RGB(255, 0, 0));
// Test Angles
[Code] .....
Using this code, and changing the value of angle1 to these values (0, 90, 180, 270) I think MFC uses the coordinate system:
Code:
180 -y
|
|
-x 270---------------- 90 +x
|
|
0 +y
This seems like a strange coordinate system to use. Am I doing something wrong? If this is correct, how can I convert my calculations to this coordinate system? (compass degrees):
Code:
0 +y
|
|
-x 270---------------- 90 +x
|
|
180 -y
I am trying to draw a rubber band rectangle. I have got a following code from a site but its giving an error:
Code:
class CSampleView: Public CView{
...
public:
CrectTracker m_tracker;//Changed to CRectTracker
...
};
Secondly, in the constructor to initialize the object CRectTracker document class:
CSampleDoc :: CSampleDOC () {
// Initialize tracker position, size and style.
m_tracker.m_rect.SetRect (0, 0, 10, 10);
m_tracker.m_nStyle = CRectTracker :: resizeInside |
CRectTracker :: dottedLine;
}
The error is:
error C2065: 'm_tracker' : undeclared identifier
How to get rid of this error??
I am trying to figure out how to create a program that will draw a triangle using *'s with a base the has a user-inputted number of *'s like so:
*
***
*****
It needs to take a user inputted number and draw a pyramid like the above pyramid with the number of *'s in the base matching the user inputted number (i.e., user enters 10, so the triangle has 10 *'s in the base). I figured it would be best to first create a loop to draw out the correct number of *'s before trying to create another loop to draw out the correct number of spaces, to properly align the *'s into a triangle shape.
int width = 0;
int height = 0;
int i = 0;
int leafWidth = 0;
[Code] .....
My requirement is,
Read *.bmp image and displaying bitmap image with scrollbar in a MFC dialog application.
I was done using this
I was read the *.bmp image as a pixel data and stored by 2D Array,
Now i want to Display this 2D array as bitmap image with scrollbar separately in the same dialog. How can i display bitmap with scrollbar using 2D array?
I want to show a list of graphical items in 1 or 2 columns (user selected). I will draw the items (owner-draw). I tried many hours today to find a solution with clistctrl. Is it possible to make it with clistctrl?
View 14 Replies View RelatedI want to display my image on window without saving it.
When data is received window size changes but there is no display on window.
My Code is:
Code:
int iBufferLength;
int iEnd;
int iSpaceRemaining;
int i;
iBufferLength = iSpaceRemaining = sizeof(chIncomingDataBuffer);
iEnd = 0;
iSpaceRemaining -= iEnd;
[code].....
where I'm doing wrong?
The question says: Make an "analog clock" that is, a clock with hands that move. You get the time of day from the operating system through a library call. A major part of this exercise is to find the functions that give you the time of day and a way of waiting for a short period of time (e.g., a second for a clock tick) and to learn to use them based on the documentation you found. Hint: clock(), sleep().
OK, I wrote below code. It is in its primary stages and has not been completed yet.
Code:
#include <GUI.h>
#include <time.h>
#include <iostream>
using namespace Graph_lib;
//---------------------------------
class Dynamic_clock : public Window {
[Code] .....
I expect the system in void clock_hands() (line 38) attaches hour1 (line 41) then waits for 1000 ms (using Sleep(1000)) then detaches hour1 and attaches hour2 this time. But it doesn't occur in practice. When the system reaches Sleep(1000); it seems to go into a comma! It doesn't show the hour1 so seeing the movement of clock ticks by the clock's hands will not be possible.
[URL] ....
I would like to create program which will analyse bitmap so would need good concept to save data. I am interested about the theory and I realize that i must to think this carefully because bad concept could create insufficient memory or inefficient program. Basically I want my program work with HSV or HSL model so I would need to convert the bitmap to HSL, but I am not sure if I should convert it first and then analyse all pixels or should I start to analyse the bitmap and make the conversion to HSL during it. But my main question is what method to choose to save the data in memory.
Even that I would start with very small, it should work also with bigger image like image having 1200 or even 4200 px on height. So the program should first analyse all columns of pixels in the image so for example 1200x800 px image has 1200 columns. So I would like to know if is it possible to create such object which would have such structure like this
Obj->basicColumnData->black->columns[name]->group
and in the place of columns should be placed data for every column. I would look for groups of pixels in the column, so in the result the column x could bear e.g. 500 groups of information and every group should contain the range of pixels e.g. group 1 should contain y value from 0 to 20, group 2 should contain value from 25-27 and so on. So I would create 1200 columns bear many of groups. This would be contained in "black" or "white" member to contain the data. This is just simplified idea, but the whole object should contain next data not just basicColumnData... So there should be another members bearing information calculated from the selected data.
So my question is what kind of method of saving data use for this? Should I use heap and dynamic allocated memory or should I create custom class, which will define every member, but these members will have to be dynamic memory? With the dynamic memory is there problem that there could be not enough memory to create such big object?
I am facing a programming logic problem. I want to draw radius sized lines from centre of circle to the circle boundary.
My code is:
int x1, y1, x2, y2, i, r, old_xc,old_yc, x,y;
int xc, yc;
x1=170;
y1=300;
x2=70;
y2=400;
pDC->Ellipse(x1,y1,x2,y2);
[Code] .....
The lines are touching the circle boudary at only start while the rest of lines are smaller and the shape is a triangle instead of a pie slice.
I know the user installation must involve some registry manipulations and some other trickery. But the ActiveX way seems to be more modular.
Is it worthwhile to separate the charting modules from the exe and make an activex dll for this purpose?
I was loaded a bmp file in my mfc window and stored rgb data in a file.My image size is 320x240.
Is possible to pick a single point (location) from that bmp image (Not the whole window)?
i like to plot a line graph using the pointed single line data using the stored file data?
here R is X Axis and G & B is Y Axis.
If i have 2D array of data means how can i plot the line graph?
I'm in the beginning stages of designing my first video game using SDL, and have run into a bit of an impasse. I attempt to draw the map using a simple tile function and nothing prints to the screen. I am going to attach the function itself.
bool Tile::draw_tiles ( void ) {
GV gv;
//Open the map
std::ifstream map ( "test.map" );
for ( int y = 0; y < GV::MAP_HEIGHT / 64; y++ ) {
for ( int x = 0; x < GV::MAP_WIDTH / 64; x++ ) {
[Code] ....
Extra notes:
1. Compiles fine.
2. No run time errors (this function returns true).
3. Apply surface is a function that takes an x and y value for position on the
map, an image, a screen to print it to, and a rectangle to cut out the image out of.
4. I did some bug testing and added another function to print the image SDLS_tiles by itself (its just a simple sprite map) after the map.close() function, and it worked fine.
I've been using code that takes a bitmap and then changes the color:
private void GetPixel(Bitmap ProcessedBitmap)
{
unsafe
{
[Code].....
Instead of using a Bitmap image (jpg, png, etc), I would like to use the desktop. I'm trying to scan my desktop for a pixel color using lockbits (GetPixel was way too slow.). I also do not wish to change the color of anything, I just want to loop until the pixel is found (with my getpixel method, I just put an if/then statement in the for loop). Something like:
if((CurrentPixel.R == 0xff) && (CurrentPixel.G == 0xff) && (CurrentPixel.B == 0xff)) Then
MsgBox("Pixel Found!")
I am trying to re-size a bitmap image for a class.They gave us two options to use to do the program with: an array or move the file position indicator. I want to use the file option. All the bitmap header info is checking out. The file after being re-sized should be 822 bytes but it is 1.6 KiB and the image is distorted.
Code:
#include <stdint.h>
/**
* Common Data Types
*
* The data types in this section are essentially aliases for C/C++
* primitive data types.
[Code]...
I don't mean how do I load a bmp, I mean how does SDL manage to do this?
View 2 Replies View Relatedi have to make an application called " paint " in c++ . It should facilitate user to draw different shapes using a mouse. Now the biggest hurdle i am facing is the usage of mouse .. what is the header file for usage of mouse ? i am using visual studio 2010 . the syntax is creating problems ..
View 1 Replies View RelatedHow to draw a rectangle and covert to an image and that image saved into word file?
View 1 Replies View RelatedFound a good beginner's tutorial to learn Visual C++: [URL] ....
How to change the drawing so that instead of squares, the game draws circles. Can figure out that using Ellipse in the code results in circle outlines, but the fill remains as square color shapes.
The drawing code from the tutorial is below. How to substitute filled circles for filled squares.
Code:
// CSameGameView drawing
void CSameGameView::OnDraw(CDC* pDC){
// First get a pointer to the document
CSameGameDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if(!pDoc)
[Code] ....